EHSI 10-K Annual Report Dec. 31, 2011

ELITE HEALTH SYSTEMS INC.

10-Ks and 10-Qs

10-Q	Quarter ended Sept. 30, 2025
10-Q	Quarter ended June 30, 2025
10-Q	Quarter ended March 31, 2025
10-K	Fiscal year ended Dec. 31, 2024
10-Q	Quarter ended Sept. 30, 2024
10-Q	Quarter ended June 30, 2024
10-Q	Quarter ended March 31, 2024
10-K	Fiscal year ended Dec. 31, 2023
10-Q	Quarter ended Sept. 30, 2023
10-Q	Quarter ended June 30, 2023
10-Q	Quarter ended March 31, 2023
10-K	Fiscal year ended Dec. 31, 2022
10-Q	Quarter ended Sept. 30, 2022
10-Q	Quarter ended June 30, 2022
10-Q	Quarter ended March 31, 2022
10-K	Fiscal year ended Dec. 31, 2021
10-Q	Quarter ended Sept. 30, 2021
10-Q	Quarter ended June 30, 2021
10-Q	Quarter ended March 31, 2021
10-K	Fiscal year ended Dec. 31, 2020
10-Q	Quarter ended Sept. 30, 2020
10-Q	Quarter ended June 30, 2020
10-Q	Quarter ended March 31, 2020
10-K	Fiscal year ended Dec. 31, 2019
10-Q	Quarter ended Sept. 30, 2019
10-Q	Quarter ended June 30, 2019
10-Q	Quarter ended March 31, 2019
10-K	Fiscal year ended Dec. 31, 2018
10-Q	Quarter ended Sept. 30, 2018
10-Q	Quarter ended June 30, 2018
10-Q	Quarter ended March 31, 2018
10-K	Fiscal year ended Dec. 31, 2017
10-Q	Quarter ended Sept. 30, 2017
10-Q	Quarter ended June 30, 2017
10-Q	Quarter ended March 31, 2017
10-K	Fiscal year ended Dec. 31, 2016
10-Q	Quarter ended Sept. 30, 2016
10-Q	Quarter ended June 30, 2016
10-Q	Quarter ended March 31, 2016
10-K	Fiscal year ended Dec. 31, 2015
10-Q	Quarter ended Sept. 30, 2015
10-Q	Quarter ended June 30, 2015
10-Q	Quarter ended March 31, 2015
10-K	Fiscal year ended Dec. 31, 2014
10-Q	Quarter ended Sept. 30, 2014
10-Q	Quarter ended June 30, 2014
10-Q	Quarter ended March 31, 2014
10-K	Fiscal year ended Dec. 31, 2013
10-Q	Quarter ended Sept. 30, 2013
10-Q	Quarter ended June 30, 2013
10-Q	Quarter ended March 31, 2013
10-K	Fiscal year ended Dec. 31, 2012
10-Q	Quarter ended Sept. 30, 2012
10-Q	Quarter ended June 30, 2012
10-Q	Quarter ended March 31, 2012
10-K	Fiscal year ended Dec. 31, 2011
10-Q	Quarter ended Sept. 30, 2011
10-Q	Quarter ended June 30, 2011
10-Q	Quarter ended March 31, 2011
10-K	Fiscal year ended Dec. 31, 2010
10-Q	Quarter ended Sept. 30, 2010
10-Q	Quarter ended June 30, 2010
10-Q	Quarter ended March 31, 2010
10-K	Fiscal year ended Dec. 31, 2009

PROXIES

DEF 14A

Filed on Oct. 31, 2025

10-K 1 form10k.htm U.S.NEUROSURGICAL INC 10-K 12-31-2011 form10k.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

x	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2011

o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to .

Commission file number: 0-15586

U.S. NeuroSurgical, Inc.

(Name of small business issuer in its charter)

Delaware		52-1842411
(State of other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

2400 Research Blvd, Suite 325,		20850
Rockville, Maryland		(Zip Code)
(Address of principal executive offices)

Issuer's telephone number:

(301) 208-8998

Securities registered under Section 12(b) of the Act:

None

Securities registered under Section 12(g) of the Act:

Common Stock, par value $.01 per share

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes o No x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Exchange Act. Yes o No x

Indicate by check mark whether the issuer (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark if disclosure of delinquent filers in response to Item 405 of Regulation S-K is not contained herein and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.

Large accelerated filer o		Accelerated filer o
Non-accelerated filer o (Do not check if a smaller reporting company)		Smaller reporting company x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

As of March 16, 2012, the aggregate market value of issuer's Common Stock held by non-affiliates was approximately $244,000, based upon the average closing price as reported on the OTCQB marketplace.

As of March 16, 2012, there were outstanding 7,797,185 shares of the issuer’s Common Stock. $.01 par value.

Documents incorporated by reference: None

FORM 10-K

U.S. NeuroSurgical, Inc.

Form 10-K for the Fiscal Year Ended December 31, 2011

Table of Con tent s

PART I			3
	Item 1.	Business	3
	Item 1A.	Risk Factors	8
	Item 1B.	Unresolved Staff Comments	11
	Item 2.	Properties	11
	Item 3.	Legal Proceedings	11
	Item 4.	Mine Safety Disclosures	12
PART II			13
	Item 5.	Market For Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	13
	Item 6.	Selected Financial Data	14
	Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operation	14
	Item 7A.	Qualitative and Quantitative Disclosures About Market Risk	16
	Item 8.	Financial Statements and Supplementary Data	16
	Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	16
	Item 9A.	Controls and Procedures	17
	Item 9B.	Other Information	19
PART III			20
	Item 10.	Directors, Executive Officers and Corporate Governance	20
	Item 11.	Executive Compensation	21
	Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	22
	Item 13.	Certain Relationships and Related Transactions, and Director Independence	23
	Item 14.	Principal Accounting Fees and Services	23
PART IV			24
	Item 15.	Exhibits, Financial Statement Schedules	24

Table of Contents

PART I

Item 1.

Business .

U.S. NeuroSurgical, Inc. (“USN” or the “Company”) owns and operates stereotactic radiosurgery centers, utilizing gamma knife technology. As used herein, unless the context indicates otherwise, the term "Company", "Registrant" and "USN." means U.S. NeuroSurgical, Inc. and its subsidiaries, U.S. NeuroSurgical Physics, Inc. and USN Corona, Inc. The Company, a Delaware corporation, was formed in July 1993. The Company's executive offices are located at 2400 Research Boulevard, Suite 325, Rockville, Maryland 20850, and its telephone number is (301) 208-8998.

Disclosure Regarding Forward Looking Statements

Statements contained in this Annual Report on Form 10-K that are not historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that forward-looking statements are inherently uncertain. Actual performance and results may differ materially from that projected or suggested herein due to certain risks and uncertainties including, without limitation, the outcome of the Company’s payment, timing and ultimate collectability of accounts receivable for gamma knife procedures from different payor groups such as Medicare and private payors; competition; technological obsolescence; government regulation and malpractice liability. Additional information concerning certain risks and uncertainties that could cause actual results to differ materially from that projected or suggested are included in Item 1A, Risk Factors, and may also be identified from time to time in the Company filings with the Securities and Exchange Commission (the “SEC”) and the Company’s public announcements, copies of which are available from the SEC or from the Company upon request.

General

USN, was organized in July 1993 to own and operate stereotactic radiosurgery centers, utilizing gamma knife technology. USN currently owns and operates one gamma knife center on the premises of New York University Medical Center (“NYU”) in New York, New York. In January 2009, the Company opened a new center, the Southern California Regional Gamma Knife Center, at the San Antonio Community Hospital (“SACH”) in Upland, California.

Management continues to explore opportunities to organize and participate in additional gamma knife centers. USN's business strategy is to provide cost-effective approaches that allow hospitals, physicians, and patients access to gamma knife treatment capability, a high capital cost item. USN provides the gamma knife to medical facilities on a "cost per treatment" basis. The Company’s business model is to own, or hold an interest in, the gamma knife units, and charge the medical facility, where the unit is housed and maintained, based on utilization.

During the fourth quarter of 2007, USN formed a new wholly owned subsidiary, USN Corona, Inc. (“USNC”), to carry investments in Corona Gamma Knife, LLC and Neuro Partners, LLC. Those subsidiaries were formed to develop and manage the gamma knife center at SACH.

Table of Contents

In April 2011, the Company finalized certain transactions and agreements with Midwest Division – RMC, LLC (“RMC”), which owns the property and operates the medical facilities in Kansas City at which one of the Company’s gamma knife centers was located. The Company sold to RMC the gamma knife radiosurgery equipment, along with related supplies and inventory, located at the Kansas City Center for an aggregate purchase price of $250,000.

USN's principal target market is medical centers in major health care catchment areas that have physicians experienced with and dedicated to the use of the gamma knife. As it has with its NYU and SACH gamma knife centers, if circumstances support the opening of additional centers, USN would seek cooperative ventures with these facilities.

USN believes that, as of December 31, 2011, there were approximately 131 gamma knife treatment centers in the U.S.

During 2010, USN expanded its market strategy to include opportunities to develop cancer centers featuring radiation therapy. These centers will utilize linear accelerators with IMRT (Intensity Modulated Radiation Therapy) and IGRT (Image Guided Radiation Therapy) capabilities. In 2010, the Company formed Florida Oncology Partners, LLC in partnership with local physicians and other investors. USNC owns a 20% interest in the venture. The center is located in Miami and opened in the second quarter of 2011. The Company invested $200,000 in connection with its interest.

In 2011, the Company formed Boca Oncology Partners LLC, in partnership with local physicians and other investors. USN Corona, Inc., USN’s subsidiary, owns a 22.5% interest in the venture. The center will be located in Boca Raton, Florida, and is scheduled to open in the third quarter of 2012.

Through September 9, 1999, USN was a wholly owned subsidiary of GHS, Inc (“GHS”). Effective on September 17, 1999, GHS distributed its shares of USN to the stockholders of GHS.

Gamma Knife Technology

The gamma knife is a unique stereotactic radiosurgical device used to treat brain tumors and other malformations of the brain without invasive surgery. The gamma knife delivers a single, high dose of ionizing radiation emanating from 201 cobalt-60 sources positioned about a hemispherical, precision machined cavity. The lesion is first targeted with precision accuracy using advanced imaging and three dimensional treatment planning techniques such as CT Scans, MR Scans, conventional X-rays, or angiography. Each individual beam is focused on a common target producing an intense concentration of radiation at the target site, destroying the lesion while spreading the entry radiation dose uniformly and harmlessly over the patient's skull . The mechanical precision at the target site is +/- 0.1mm (1/10 of 1 millimeter). Because of the steep fall-off in the radiation intensity surrounding the target, the lesion can be destroyed, while sparing the surrounding tissue.

Table of Contents

The procedure, performed in a single treatment, sharply reduces hospital stay times and eliminates post-surgical bleeding and infection. When compared with conventional neurosurgery, gamma knife treatment is less expensive. However, not all patients are candidates for radiosurgery since the decision to use the gamma knife depends on the type, size, and location of the lesion.

Linear Accelerators

A linear particle accelerator (LINAC) is a type of particle accelerator that greatly increases the velocity of charged subatomic particles or ions by subjecting the charged particles to a series of oscillating electric potentials along a linear beamline. LINACs accelerate electrons using a tuned-cavity waveguide, in which the RF (radio frequency) power creates a standing wave. Some LINACs have short, vertically mounted waveguides, while higher energy machines tend to have a horizontal, longer waveguide and a bending magnet to turn the beam vertically towards the patient. Medical LINACs use monoenergetic electron beams between 4 and 25 MeV, giving an X-ray output with a spectrum of energies up to and including the electron energy when the electrons are directed at a high-density (such as tungsten) target. The electrons or X-rays can be used to treat both benign and malignant disease.

The intensity of the radiation in IMRT can be changed during treatment to spare more adjoining normal tissue than is spared during conventional radiation therapy. Because of this an increased dose of radiation can be delivered to the tumor using IMRT. IMRT is a type of conformal radiation, which shapes radiation beams to closely approximate the shape of the tumor.

IGRT is used to help better deliver radiation therapy to cancerous tumors. This is very useful since tumors can move between treatments due to differences in organ filling or movements while breathing. IGRT involves conformal radiation treatment guided by specialized imaging tests, such as CT scans, ultrasound or X-rays. These tests are done in the treatment room just before the patient is to receive his or her daily radiation therapy treatment.

New York Gamma Knife Center

USN opened its New York gamma knife treatment center in July 1997 on the campus of NYU Medical Center. Construction of the gamma knife suite was completed in July 1997. The gamma knife cost and the cost of the facility improvements totaled approximately $4,700,000.

The Company installed a new Leksell gamma knife, the PERFEXION model, at the NYU Medical Center in March 2009 in replacement of the older gamma knife equipment. The net cost to the Company of the new machine was $3,592,000 after a credit for the trade-in of the older machine. The purchase price was financed through a capital lease with Elekta Capital. The Company incurred construction costs of $151,000 in connection with the installation of the equipment and the upgrades to the facility. In connection with this upgrade, the Company modified its arrangement with NYU to extend the term for 12 years from March 2009. The Company is responsible under the lease agreement with Elekta Capital for 81 months of lease payments which began in July 2009 of approximately $61,000 per month. In addition, lease payments of $2,000 per month began in July 2010 and continue through April 2017 to cover construction costs.

Table of Contents

The Company has a marketing representative to help introduce the technology to neurosurgeons in the New York tri-state region. Pursuant to USN’s facility agreement with NYU, USN is responsible for the maintenance and insurance for the gamma knife equipment at the NYU facility and is reimbursed for use of the gamma knife based on a fee per procedure performed with the equipment. NYU provides the medical and technical staff to operate the facility. NYU pays USN a scheduled fee based on the number of patient procedures performed. For the years ended December 31, 2011, 2010 and 2009, USN derived revenues from the NYU center of approximately $2,029,000 and $1,907,000 and $1,464,000, respectively, as a result of 234, 222 and 171 procedures performed, respectively, during such periods. Costs associated with closing and restoring the NYU facility to its original condition are the responsibility of USN.

The Southern California Regional Gamma Knife Center

During 2007, the Company managed the formation of the Southern California Regional Gamma Knife center at SACH in Upland, California. The Company participates in the ownership and operation of the center through its wholly-owned subsidiary, USNC. Corona Gamma Knife, LLC (“CGK”) is party to a 14-year agreement with SACH to renovate space in the hospital and install and operate a Leksell PERFEXION gamma knife. CGK leased the gamma knife from Neuro Partners LLC, which holds the gamma knife equipment. In addition to returns on its ownership interests, USNC expects to receive fees for management services relating to the facility.

USNC is a 20% owner of Neuro Partners LLC. USNC also owned initially 27% of CGK, but increased its ownership to 44% during 2011 to accommodate a member who desired to transfer his interest.

Construction of the SACH gamma knife center was completed in December 2008 and the first patient was treated in January 2009. The project has been funded principally by outside investors. While the Company has led the effort in organizing the business and overseeing the development and operation of the SACH center, its investment to date in the SACH center has been minimal.

Sale of Gamma Knife Business and Equipment at Former Kansas City Center

The Company sold to RMC the gamma knife radiosurgery equipment, along with related supplies and inventory, located at the Kansas City Center for an aggregate purchase price of $250,000. RMC has also indicated its intention to employ the physicist who, up to the time of the sale, operated the gamma knife equipment on the Company’s behalf. The Company will, upon request of RMC and at RMC’s cost and expense, assist RMC in replenishing the gamma knife equipment’s radioactive cobalt-60 as is necessary for the proper operation of the gamma knife.

Table of Contents

In connection with the sale of the gamma knife equipment described above, the Company and RMC entered into an agreement terminating the gamma knife Neuroradiosurgery Equipment Agreement and the Ground Lease Agreement, each originally entered into between the parties in 1993, and concluded all arrangements between the parties relating to the operation of the gamma knife center and the lease of the premises. Immediately preceding the termination of these agreements, the Company and RMC satisfied all outstanding obligations between the parties, including the release of cash held in escrow, resulting in a net payment of approximately $385,000, including payments of net settlement proceeds of $72,000 for prior year disputed revenues and outstanding accounts receivable of $313,000, to the Company. In connection with the agreement, the parties also entered into a mutual release respecting all other outstanding claims and disputes between them relating to the Kansas City center.

The Company agreed with RMC that through September 2015, it will not participate in gamma knife operations in the states of Missouri, Kansas, Nebraska, Iowa and Arkansas.

Future Gamma Knife Centers

USN is currently exploring other opportunities for gamma knife centers and centers that provide related healthcare services located near hospitals throughout the United States. Discussions regarding such centers is preliminary and there can be no assurance that any such discussions will result in the opening of new centers.

Florida Oncology Partners

During the quarter ended September 30, 2010, the Company participated in the formation of Florida Oncology Partners, LLC (“FOP”), consisting of Florida Oncology Partners, LLC and Florida Oncology Partners RE, LLC, which operates a cancer center located in West Kendall, Florida. The center diagnoses and treats patients utilizing a Varian Rapid Arc linear accelerator and a GE CT scanner. USNC owns a 20% interest in FOP and invested $200,000. The remaining 80% is owned by other outside investors. The center opened and treated its first patient in May 2011. The Company’s recorded investment in FOP is $270,000 at December 31, 2011.

During 2011, Florida Oncology Partners, LLC entered into a capital lease with Key Bank. Under the terms of the capital lease, USNC agreed to guarantee 20% of the outstanding lease obligation in the event of default.

Boca Oncology Partners

During the quarter ended June 30, 2011, the Company participated in the formation of Boca Oncology Partners, LLC (“BOP”), which expects to own and operate a cancer center in Boca Raton, Florida. In June 2011, Boca Oncology Partners RE, LLC (“BOPRE”), an affiliated entity, purchased a 20% interest in a medical office building in West Boca, Florida in which BOP plans to operate. BOP will occupy approximately 6,000 square feet of the 32,000 square foot building. The Company’s wholly-owned subsidiary, USN Corona, Inc. invested $225,000 initially and will have a 22.5% interest in BOP and BOPRE. The remaining 77.5% will be owned by other outside investors. The Company currently expects the cancer center in Boca Raton to open in the third quarter of 2012.

Table of Contents

New Strategy for Participation in Cancer Treatment

As a result of the Company’s experiences over the past few years, The Company has expanded its focus to the broader based cancer treatment market. In order to reduce the risk and broaden its opportunities for profitable growth, the Company, where possible, has been pursuing partnerships with local investors/providers to develop and operate oncology centers that utilize linear accelerators (LINACs) to treat cancers in the whole body. The Company also continues to evaluate opportunities to also develop additional gamma knife facilities. Florida Oncology Partners and the Southern California Regional Gamma Knife Center typify this new strategy.

Employees

U.S. NeuroSurgical, Inc. has three full-time employees and relies on consultants for certain services as required from time-to-time. All of its full-time employees are engaged in sales, marketing and administration.

Item 1A.

Risk Factors.

Regulatory Environment

The levels of revenues and profitability of companies involved in the health services industry, such as the Company, may be affected by the continuing efforts of governmental and third party payors to contain or reduce the costs of health care through various means. Although the Company does not believe that its business activities will be materially affected in the foreseeable future, it is not possible to predict the long term effect of recent and future changes in the regulatory environment, or the responses of federal, state or private payors for healthcare goods and services in response to healthcare proposals or legislation.

In March 2010, significant reforms to the healthcare system were adopted in the form of the Patient Protection and Affordable Care Act (the “PPACA”). The PPACA includes provisions that, among other things, reduce and/or limit Medicare reimbursement to certain providers, require all individuals to have health insurance (with limited exceptions) and impose new and/or increased taxes. The Company cannot predict the effects these changes may have on its business, and no assurance can be given that any such changes will not have a material adverse effect on the Company.

In addition, the provision of medical services in the United States is dependent on the availability of reimbursement to consumers from third party payors, such as government and private insurance companies. Although patients are ultimately responsible for services rendered, the Company expects that the majority of its revenues will be derived from reimbursements by third party payors. Medicare has authorized reimbursement for gamma knife and other forms of cancer treatment. Over the last several years, such third party payors are increasingly challenging the cost effectiveness of medical products and services and taking other cost containment measures. Therefore, although treatment costs using the gamma knife compare favorably to traditional invasive brain surgery, it is unclear how this trend among third party payors and future regulatory reforms affecting governmental reimbursement will affect procedures in the higher end of the cost scale.

Table of Contents

In the future, the Company may establish additional gamma knife or other types of cancer treatment centers. Completion of future centers would require approvals and arrangements with hospitals, health care organizations, or other third parties, including certain regulatory authorities. The Food and Drug Administration has issued the requisite pre-market approval for the gamma knife utilized by USN. In addition, many states require hospitals to obtain a Certificate of Need (“CON”) before they can acquire a significant piece of medical equipment. Should the Company enter into future ventures such "need" will be demonstrable, but it can have no assurance that CONs will be granted. In addition, the Nuclear Regulatory Commission (the “NRC”) must issue a permit to USN to permit loading the cobalt at each gamma knife site. While the Company believes that it can obtain a NRC permit for each gamma knife unit, there is no assurance that it will.

Liability Insurance

Although USN does not directly provide medical services, it has obtained professional medical liability insurance, and has general liability insurance as well. USN’s professional medical liability and general liability policies have limits of $3 million each. The Company believes that its insurance is adequate for providing treatment facilities and non-medical services, although there can be no assurance that the coverage limits of such insurance will be adequate or that coverage will not be reduced or become unavailable in the future.

Competition

The health care industry, in general, is highly competitive and the Company expects to have substantial competition from other independent organizations, as well as from hospitals in establishing future gamma knife or other types of cancer treatment centers. There are other companies that provide gamma knife or other types of cancer treatment on a "cost per treatment basis". In addition, larger hospitals may be expected to maintain a gamma knife as well as competing technologies as part of their regular inpatient services, which could have the effect of reducing the number of gamma knife procedures performed at such facility. Principal competitive factors include quality and timeliness of test results, ability to develop and maintain relationships with referring physicians, facility location, convenience of scheduling and availability of patient appointment times. The Company believes that cost containment measures will encourage hospitals to seek companies that are providing the technology, instead of incurring the capital cost of establishing their own treatment centers.

Gamma Knife Financing

The gamma knife is an expensive piece of equipment, presently costing from $3.0 to $4.2 million, depending on features. Therefore, the Company's development of new gamma knife centers is dependent on its ability to secure favorable financing. In addition, after a number of years of use, the radioactive cobalt contained in the gamma knife requires replacement. This is also an expensive process. For example, the cobalt for the previous gamma knife in the NYU facility was reloaded in August 2003 and the costs were approximately $800,000.

Table of Contents

Gamma Knife Supply and Servicing

To date, USN has purchased all of its gamma knife equipment from Elekta Instruments, Inc., a subsidiary of AB Elekta of Stockholm, Sweden. In March 2009, the company installed a new PERFEXION model, at the NYU Medical Center in replacement of the older gamma knife equipment. Elekta is responsible for the installation and testing of the equipment and the training of the hospital staff in the operation of the equipment. USN arranges for maintenance services for its gamma knife units, including the necessary services related to cobalt replacement, through Elekta. Any interruption in the supply of equipment or services from Elekta would adversely affect USN's ability to maintain its gamma knife treatment centers.

Also, should restrictions be imposed on the operations of Elekta, such as restrictions relating to the handling and disposal of radioactive materials, necessary support services could become more costly and more difficult to obtain.

New Technology/Possible Obsolescence

Gamma knife technology may be subject to technological change. Consequently, the Company will have to rely on the leading gamma knife's manufacturer, Elekta, to introduce improvements or upgrades in order to keep pace with technological change. Any such improvements or upgrades which the Company may be required to introduce will require additional financing. In addition, newly developed techniques and devices for performing brain surgery may render the gamma knife less competitive or obsolete.

Dependence on Hospital, Healthcare Organizations and Others

USN’s business model is to reach an arrangement with a hospital or other medical centers for the installation and operation of a gamma knife facility and then to purchase the gamma knife equipment and construct and operate the facility. Before entering into such an agreement, USN must make an assessment of the economic feasibility of operating the gamma knife at that location. The Company retains no control or influence over the medical staff or decisions regarding the treatment of patients. In that regard, USN’s economic success is highly dependent on its initial determinations of the viability of the gamma knife’s location. Should the medical center or the physicians at that medical center ultimately use the gamma knife facility for significantly fewer patients than initially projected, the Company could be required to operate the gamma knife center at a loss for an extended period of time.

Reliance on Business of the New York Gamma Knife Center

While it is the Company’s objective to expand activities to additional cancer centers that rely on a broad range of diagnostic and radiation treatments, the Company currently relies on the New York gamma knife center for the majority of its business. In recent periods, services provided at the New York center have represented over 90% of the Company’s revenues. Unless and until the Company is successful in building its activities at other centers and at new locations, disruptions at the New York center could have a materially adverse effect on the Company.

Table of Contents

Availability of Working Capital.

To date, we have earned sufficient income from operations to fund periodic operating losses and support efforts to pursue new gamma knife or other types of cancer treatment centers. If the Company experiences operating losses in the future, we will be required to seek additional capital to support continued operations and the development of new centers, but we cannot assure you, however, that we will be able to raise such additional capital as and when required.

Stock Price Volatility; Illiquid Trading Market

The Company’s common stock is thinly traded. At present, trades are reported on the OTC market only several days a month. This thin trading and relatively small non-affiliate float lead to a high level of volatility in reported sale prices. Investors in the Company’s Common Stock will have a limited ability to trade shares on the open market and, even if able to sell shares, could suffer significant market losses due to large swings in the prices of the shares.

Item 1B.

Unresolved Staff Comments.

None

Item 2.

Properties .

The Company's base facility, from which it conducts substantially all of its administrative operations, is located in Rockville, Maryland and occupies approximately 1,300 square feet. The rent is approximately $46,000 per year. USN occupies about 2,000 square feet at the NYU Medical Center in New York, New York. Pursuant to the facility agreements with NYU, USN is not required to pay separate rent for the premises occupied by its gamma knife center. Overhead, including rent, was negotiated in determining the fee paid to USN for the use of the gamma knife. USN’s agreement with NYU was extended in 2008 and now expires in 2021.

Item 3.

Legal Proceedings .

During 2007, USN instituted a lawsuit against Midwest Division – RMC LLC, in the Circuit Court of Jackson County, Missouri seeking damages against the defendant as successor to USN’s agreement with RMC relating to the Kansas City gamma knife center. This lawsuit arose out of USN’s agreement with RMC, executed in December 1993. In the course of an audit, USN discovered that the defendant had failed to make proper payments to USN under that agreement. USN sought to recover amounts representing such underpayments.

Table of Contents

On July 3, 2008, following the trial at the Circuit Court, the jury found in favor of USN and assessed damages at $1,919,124. On March 2, 2010, the decision in favor of USN was affirmed on appeal, but the award of damages was reduced substantially. The result was a net payment to USN, after costs of litigation, of $459,000.

In January 2011, RMC initiated additional legal action to compel the Company to resource the cobalt in the Kansas City gamma knife. However, the Company felt that such demand was inappropriate. Ultimately, all matters between the parties were resolved in April 2011 in connection with the sale by the Company to RMC of the gamma knife equipment at the Kansas City Center and the termination of all arrangements with RMC, which is described in Note D to the audited financial statements of the Company included in this report.

Item 4.

Mine Safety Disclosures.

Not applicable

Table of Contents

PART II

Item 5.

Market For Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

The Company's Common Stock is traded on the over-the-counter market and quoted on the OTCQB marketplace. OTCQB is the middle tier of the Pink OTC Market, Inc. OTCQB companies are reporting with the SEC or a U.S. banking regulator.

The following table displays the range of high and low closing prices for the Company’s Common Stock for the period from January 1, 2010 through December 31, 2011.

Period	High Close	Low Close

January 1 – March 31, 2010	.29	.09
April 1 - June 30, 2010	.24	.10
July 1 – September 30, 2010	.23	.12
October 1 – December 31, 2010	.25	.12

January 1 – March 31, 2011	.22	.09
April 1 - June 30, 2011	.20	.10
July 1 – September 30, 2011	.24	.12
October 1 – December 31, 2011	.14	.03

The quotations reflect inter-dealer prices, without retail mark-up, mark-down or commissions and may not necessarily represent actual transactions.

As of March 16, 2012, there were approximately 285 holders of record of the Company's Common Stock.

To date the Company declared no dividends on its Common Stock and does not anticipate declaring dividends in the foreseeable future.

During the fourth quarter of 2011, the Company did not purchase any of its own equity securities.

Table of Contents

Item 6.

Selected Financial Data.

Not required for smaller reporting companies

Item 7.

Management's Discussion and Analysis of Financial Condition and Results of Operation.

Results of operations

2011 Compared to 2010

Patient revenue increased 8% to $2,060,000 in 2011 as compared to $1,916,000 in 2010. This increase in patient revenue was largely due to the gradual increase in volume at the New York center following the reopening of the center with the new PERFEXION gamma knife in March 2009. Patient volumes have now stabilized at a higher level. This increase in volume at the New York center was the result of increased marketing efforts and additional physician interest in the center following the installation of the new equipment.

Patient expenses increased 47% to $884,000 in 2011 from $603,000 in 2010. Patient expenses do not vary materially with the number of procedures performed, but are tied to depreciation, maintenance and other fixed expenses. The increase experienced in 2011 over 2010 was due largely to the increased maintenance cost at the New York center after the expiration of the machine warranty period. Selling, general and administrative expense (SG&A) decreased 3% to $947,000 in 2010 from $979,000 in the previous year. This decrease in SG&A resulted from lower insurance costs and professional fees realized in 2011. Interest expense decreased 51% to $177,000 in 2011 from $359,000 in 2010. This decrease was due to the payoff of the Kansas City lease in March 2011 in connection with the sale and transfer of the gamma knife equipment and operations at the Kansas City center. The Company reported net income of $29,000 in 2011, which compares to net income of $469,000 in the prior year. This large decrease was due to the fact that the Company recognized revenue of $459,000 in 2011 due to the settlement with RMC. In addition, the Company’s performance benefitted from an increase in patient revenue at the New York center.

2010 Compared to 2009

Patient revenue increased 30% to $1,916,000 in 2010 as compared to $1,472,000 in 2009. This increase in patient revenue was largely due to increased volume at the New York center following the reopening of the center with the new PERFEXION gamma knife. This newer technology allowed for an increase in the number of procedures performed at the Company’s New York center during all of 2010, as compared to 2009, the year in which the new equipment was installed. Revenue was also higher due to the higher reimbursement per procedure negotiated in connection with the extension of the contract with NYU.

Table of Contents

Patient expenses increased 47% to $603,000 in 2010 from $411,000 in 2009. Patient expenses do not vary materially with the number of procedures performed, but are tied to depreciation, maintenance and other fixed expenses. The increase experienced in 2010 over 2009 was due largely to increased depreciation costs and a new maintenance contract following the installation of the new equipment at the New York center in April 2009. SG&A increased 12% to $979,000 in 2010 from $878,000 in the previous year. This increase in SG&A resulted principally from increased marketing efforts at the New York center. Interest expense increased 23% to $359,000 in 2010 from $291,000 in 2009. This increase was due to the significant increase in capital lease obligations resulting from the financing of the new gamma knife at the Company’s New York center. These expenses are expected to remain at this higher level, at least until the termination of the lease arrangement at the Kansas City center. The Company reported net income of $469,000 in 2010, which compares to net income of $72,000 in the prior year. This improvement was due primarily to the fact that the Company recognized revenue of $459,000 in 2010 due to the settlement with RMC. In addition, the Company’s performance benefitted from an increase in patient revenue at the New York center, which was only partially offset by the new capital lease obligations at that location.

Liquidity and capital resources

At December 31, 2011 the Company had working capital of $795,000 as compared to $594,000 at December 31, 2010 Cash and cash equivalents at December 31, 2011 were $830,000 as compared to $820,000 at December 31, 2010.

Net cash provided by operating activities was $648,000 in 2011 as compared with $1,288,000 for 2010. Operating income for 2010 included $459,000 of revenue due to the settlement with RMC. Depreciation and amortization was $661,000 in 2011 as compared to $906,000 in 2010.

Net cash provided by investing activities for the year ended 2011 was $77,000, as a result of amounts received in connection with the disposition of the Kansas City gamma knife center, offset by investments made by the Company in Florida Oncology Partners, LLC and Neuro Partners LLC. Net cash used in investment activities in 2010 was $240,000, all of which related to investments in Florida Oncology Partners, LLC and Neuro Partners LLC.

For the year ended December 31, 2011, net cash used in financing activities was $715,000 as compared to $901,000 in 2010. This decrease resulted from a decrease in the repayment of obligations under the terms of our gamma knife financing arrangements.

Off-balance sheet arrangements

None

Critical accounting policies

Estimates and assumptions

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Table of Contents

Asset retirement obligations

The Company records liabilities for legal obligations associated with the retirement of tangible long-lived assets based on the estimated future cost of asset retirement obligations discounted to present value, and records a corresponding asset and liability on its consolidated balance sheets. The values ultimately derived are based on many significant estimates, including future decommissioning costs, inflation, cost of capital, and market risk premiums. The nature of these estimates requires the Company to make judgments based on historical experience and future expectations. Revisions to the estimates may be required based on such things as changes to cost estimates or the timing of future cash outlays. Any such changes that result in upward or downward revisions in the estimated obligation will result in an adjustment to the related capitalized asset and corresponding liability on a prospective basis. The estimated costs of these obligations are capitalized as costs of the assets subject to the retirement obligations and amortized over the lives of the assets.

Investments in unconsolidated entities

The Company accounts for its investment in unconsolidated entities by the equity method. The Company records its share of such earnings (loss) in the consolidated statement of operations as “Income (loss) from investment in unconsolidated entities”. The carrying value of the Company’s investment in unconsolidated entities is recorded in the consolidated balance sheets.

Item 7A.

Qualitative and Quantitative Disclosures About Market Risk.

Not required for smaller reporting companies

Item 8.

Financial Statements and Supplementary Data.

The financial statements and supplementary data required by this item are set forth in this Annual Report on Form 10-K beginning at page F-1.

Item 9.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

None.

Table of Contents

Item 9A.

Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in the Company's reports under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to our management, as appropriate, to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. We do realize that we are a very small company and as a small company with only the officers and directors participating in the day to day management, with the ability to override controls, each officer and director has multiple positions and responsibilities that would normally be distributed among several employees in larger organizations with adequate segregation of duties to ensure the appropriate checks and balances. Because the Company does not currently have a separate chief financial officer, the President performs these functions with the support of one of the Company’s outside directors who assists in the reporting and disclosure process (the “Lead Director”).

Our management evaluated the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report. Based upon that evaluation (including an evaluation of the updated procedures described above) the Company’s President concluded that the Company’s disclosure controls and procedures were not effective as of the end of the period covered by this report for the information required to be disclosed by the Company in the reports it files or submits under the Securities Exchange Act of 1934, as amended, to be recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, due to the material weakness in internal control over financial reporting described below.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934). Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles in the United States of America. The Company’s internal control over financial reporting includes those policies and procedures that:

(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company;

(ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles in the United States of America, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.

Table of Contents

All internal control systems, no matter how well designed, have inherent limitations and can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

Our management, including our President, and assisted by our Lead Director, assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2011. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework. A material weakness is a control deficiency, or a combination of control deficiencies in internal controls over financial reporting, such that there is a reasonable possibility that a material misstatement of annual or interim financial statements will not be prevented or detected on a timely basis. In connection with the assessment described above, management has identified the following material weakness as of December 31, 2011: the Company did not maintain sufficient qualified personnel with the appropriate level of knowledge, experience and training in the application of accounting principles generally accepted in the United States of America and in internal controls over financial reporting commensurate with its financial reporting requirements. Specifically, effective controls were not designed and in place to ensure that the Company maintained, or had access to, appropriate resources with adequate experience and expertise in the area of financial reporting for discontinued operations. This material weakness resulted in a financial statement misstatement being made and going uncorrected until brought to management’s attention during the review of the quarterly financial information for the period ended September 30, 2011 by the Company’s registered independent public accounting firm. Since that time, management has considered other aspects of the Company’s internal control over financial reporting and the possible impact of the accuracy and reliability of its financial statements generally. Management is continuing to review its controls and procedures that resulted in the failures in the previous reporting period and which could result in other issues in financial reporting and is in the process of developing efficient approaches to remediate this material weakness.

Changes in Internal Control over Financial Reporting

Management is in the process of reviewing and developing plans to remediate the material weakness identified above. Otherwise, there have not been any changes in the Company’s internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the fiscal quarter ended December 31, 2011 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Item 9B.

Other Information .

Not applicable.

Table of Contents

PART III

Item 10.

Directors, Executive and Corporate Governance.

The directors and executive officers of the Company are as follows:

Name	Age	Position

Alan Gold	67	President & Chairman of the Board

William F. Leimkuhler	60	Director

Charles H. Merriman, III	77	Director

Susan Greenwald	66	Vice President and Secretary

Alan Gold has served as President and Chairman of the Board of USN since 1996. Mr. Gold has also been a director of USN since its formation in 1993. Mr. Gold served as President of GHS from 1983 through May 1999 and director of GHS since its formation through November 1999. Mr. Gold was one of the founders of Global Health Systems, the predecessor of GHS, serving as its President since its formation in July 1983. From 1981 to 1983 he served as Executive Vice President of Libra Group, a company located in Rockville, Maryland, engaged in health care automation, where he was President of Global Health Foundation and Libra Research and Executive Vice President of Libra Technology. From July 1997 through March 1998 Mr. Gold was also an employee of Health Management Systems.

William F. Leimkuhler has served as director of USN since May 1999. He currently serves as Lead Director of USN’s Board of Directors. He also served as a director of GHS since its inception in 1984 through November 1999. Mr. Leimkuhler is currently General Counsel & Director of Business Development for Paice Corporation, the developer of an advanced hybrid electric powertrain for passenger vehicles, a position he has held since October 1999. He also acts as a consultant on corporate and business development matters to several emerging growth companies. From January 1994 until October 1999, he served as Vice President and General Counsel of Allen & Company Incorporated, an investment banking firm. Mr. Leimkuhler also serves as a director of Argan, Inc.

Charles H. Merriman, III has served as a director of USN since May 1999. He also served as a director of GHS from October 1997 to November 1999. Mr. Merriman retired at the close of the year 2001 from service as Senior Vice President and Managing Director of BB&T Capital Markets ("BB&T"), an investment banking enterprise, where he was employed in various capacities since 1972 by BB&T and its predecessor. Mr. Merriman has extensive knowledge of USN’s primary focus on healthcare and technology.

Susan Greenwald has served as Vice President of Marketing Communications and as Secretary of USN since May 1999. She performed services for GHS in the same capacity from its inception in 1983 through May 1999. Ms. Greenwald was one of the founders of Global Health Systems, the predecessor of GHS, and served as its Vice President of Marketing Communications since 1983. From 1981 through 1983 she was the Proposal Manager for Libra Technology and Global Health Foundation, sister companies engaged in federal contracting and private enterprise, respectively, in the healthcare information technology business. From July 1997 through February 1998, Ms. Greenwald was an employee of Health Management Systems.

Table of Contents

Mr. Gold and Ms. Greenwald are married.

Pursuant to the Company’s bylaws, the Company’s Board of Directors is elected by the stockholders at each annual meeting to serve until the next annual meeting or until their successors are elected and qualified. In the case of a vacancy, a director will be appointed by a majority of the remaining directors then in office to serve the remainder of the term left vacant. Directors do not receive any fees for attending board meetings. Directors are entitled to receive reimbursement for traveling costs and other out-of-pocket expenses incurred in attending board meetings. During the year ended December 31, 2011, the Board of Directors held two meetings, which was attended by all incumbent directors. In view of the small size of the Company’s Board, it does not operate through committees. Instead, the full Board of Directors performs the functions typically performed by the audit, compensation and nominating committees.

Pursuant to the Company’s bylaws, officers of the Company hold office until the first meeting of directors following the next annual meeting of stockholders and until their successors are chosen and qualified.

Section 16 (a) Beneficial Ownership Reporting Compliance

Based solely upon a review of the copies of the forms furnished to the Company, or written representations from certain reporting persons, the Company believes that during the year ended December 31, 2011, all filing requirements applicable to its officers and directors were complied with by such individuals.

Item11.

Executive Compensation.

The information below sets forth the compensation for the years ended December 31, 2011, 2010, and 2009, for the President of the Company.

Summary Compensation Table
Name and	Annual Compensation
Principal Position	Year	Salary
Alan Gold	2011	$	300,000
President & Chairman	2010	$	300,000
of the Board	2009	$	300,000

Director Compensation

During 2011, our directors who are not officers or employees were entitled to an annual retainer of $3,000. The Lead Director, received a retainer of $3,000 per month in view of the higher level of activity required of him. Our directors of the Company who are officers or employees do not receive any additional compensation for serving on the Board.

Table of Contents

Employment Agreements

The Company and Mr. Gold are parties to an employment agreement giving either the Company or Mr. Gold the option to terminate the agreement by giving the other party 6 months written notice.

Item 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The following table sets forth, as of March 16, 2012, certain information with respect to each beneficial owner of more than 5% of the Company's Common Stock and each director and executive officer of the Company:

Name and Address of Beneficial Owner	Number of Shares Beneficially Owned (1)	Percent of Class

Alan Gold (2)	1,140,246	14.6%
2400 Research Blvd.
Rockville, MD 20850

William F. Leimkuhler	100,000	1.3%
43 Salem Straits Road
Darien, CT 06820

Charles H. Merriman III	130,672	1.7%
5507 Cary St. Road
Richmond, VA 23226

Stanley S. Shuman (3)	2,367,734	30.4%
711 Fifth Avenue
New York, NY 10022

Allen & Company Incorporated	1,578,489	20.2%
711 Fifth Avenue
New York, NY 10022

All Directors and officers of USN	1,370,918	17.6%
as a group (2) (four persons)

___________________

(1)	Unless otherwise indicated, all shares are beneficially owned and sole voting and investment power is held by the person named above.

(2)	Includes 1,140,246 shares held jointly by Mr. Gold and his wife, Susan Greenwald, as joint tenants with right of survivorship.

(3)

Includes 1,578,489 shares owned by Allen & Company Incorporated, Mr. Shuman disclaims beneficial ownership in such shares, except to the extent of his pecuniary interest therein.

Table of Contents

Item 13.

Certain Relationships and Related Transactions, and Director Independence.

None

Item 14.

Principal Accounting Fees and Services.

Audit Fees . Audit Fees represent fees for services rendered in connection with the annual audit and quarterly reviews of the Company’s financial statements. For the years ended December 31, 2011, 2010 and 2009, the Company paid $62,000, $60,750 and $60,000, respectively, for Audit Fees to Dixon Hughes Goodman LLP.

Audit-Related Fees . Audit-Related Fees represent fees for services rendered in connection with assurance and related services that are reasonably related to the performance of the audit or review of the financial statements and are not reported as Audit Fees. For the years ended December 31, 2011, 2010 and 2009, the Company did not pay or accrue any amounts for Audit Related Fees.

Tax Fees . Tax Fees represent fees for services rendered in connection with tax compliance, tax advice and tax planning. For the years ended December 31, 2011, 2010 and 2009, the Company paid $13,000, $29,727 and $11,000 for Tax Fees to Dixon Hughes Goodman, LLP.

All Other Fees . All Other Fees represent fees for services rendered by the Company’s principal accountants other than those described above. For the years ended December 31, 2011, 2010 and 2009, the Company did not pay or accrue any amounts for these services.

The Board of Directors has established a policy requiring pre-approval by the Board of Directors of all audit and non-audit services provided by its registered independent public accounting firm. The policy requires the general pre-approval of annual audit services and all other permitted services. All of the audit and non-audit services described above were approved by the Board.

Table of Contents

PART IV

Item 15.

Exhibits , Financial Statement Schedules.

(a) (1) Financial Statements and Financial Statement Schedules . The following are filed as part of this report:

		Page No.
Consolidated Financial Statements of the Company		F-1
	Report of Independent Registered Public Accounting Firm	F-2
	Consolidated Balance Sheets as of December 31, 2011 and 2010	F-3
	Consolidated Statements of Operations for the years ended December 31, 2011, 2010, and 2009.	F-4
	Consolidated Statements of Stockholders' Equity for the years ended December 31, 2010, 2009, and 2008	F-5
	Consolidated Statements of Cash Flows for the year ended December 31, 2011, 2010, and 2009	F-6
	Notes to Consolidated Financial Statements	F-7

(2) Financial Statement Schedules . All financial statement schedules as required by Item 8 and Item 15 of Form 10-K have been omitted because the information requested is not required, not applicable, or is shown in the Consolidated Financial Statements or Notes thereto

(b) Exhibits:

3.1

Form of Amended and Restated Certificate of Incorporation of U.S. NeuroSurgical, Inc. (“USN”) (incorporated herein by reference to Exhibit 3.1 to our Form 10 Registration Statement as filed July 1, 1999)

3.2

Form of Amended and Restated Bylaws of USN (incorporated herein by reference to Exhibit 3.2 to our Form 10 Registration Statement as filed July 1, 1999)

4.1

Form of Stock Certificate of Common Stock (incorporated herein by reference to Exhibit 4.1 to our Form 10 Registration Statement as filed July 1, 1999)

10.1

Distribution Agreement dated May 27, 1999 between GHS, Inc. (“GHS”) and USN (incorporated herein by reference to Exhibit 10.1 to our Form 10 Registration Statement as filed July 1, 1999)

10.2

Tax Matters Agreement dated May 27, 1999 between GHS and USN (incorporated herein by reference to Exhibit 10.2 to our Form 10 Registration Statement as filed July 1, 1999)

10.3

Assignment and Assumption Agreement dated May 27, 1999 between GHS and USN (incorporated herein by reference to Exhibit 10.3 to our Form 10 Registration Statement as filed July 1, 1999)

10.4

Employment Agreement dated December 14, 1984 between USN and Alan Gold, as amended March 7, 1986 (incorporated by reference to Exhibit 10.3 of GHS’s Registration Statement No. 33-4532-W on form S-18)

Table of Contents

10.5

Agreement dated December 29, 1993 between USN and Elekta Instruments, Inc. (incorporated by reference to 10o to GHS’s 1994 Annual Report on Form 10-K)

10.6

Agreement dated August 1, 1996 between USN and DVI, Inc. (incorporated by reference 10j to GHS’s 1997 Annual Report on form 10-K)

10.7

Gamma Knife Neuroradiosurgery Equipment dated as of November 26, 1996 between New York University on behalf of New York University Medical Center and USN (incorporated herein by reference to Exhibit 10.10 to our Form 10 Registration Statement as filed July 1, 1999)

21.1

List of Subsidiaries (incorporated herein by reference to Exhibit 21.1 to our Form 10 Registration Statement as filed July 1, 1999)

31.1*

Certifications of CEO and CFO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.1*

Certifications of CEO and CFO pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

___________

* Filed herewith

(c)	Financial Statement Schedules . None

Table of Contents

SIGNATURES

In accordance with Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

U.S. NeuroSurgical, Inc.
(Registrant)

By:	/s/ Alan Gold
		Alan Gold
		President & Chairman of the Board and Principal Financial Officer

Dated:		March 30, 2012

In accordance with the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

March 30, 2012		/s/ Alan Gold
		Alan Gold
		President & Chairman of the Board

March 30, 2012		/s/ William F. Leimkuhler
		William F. Leimkuhler
		Director

March 30, 2012		/s/ Charles H. Merriman III
		Charles H. Merriman III
		Director

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Contents		Page

Consolidated Financial Statements		F-1

	Report of Independent Registered Public Accounting Firm	F-2

	Consolidated Balance Sheets as of December 31, 2011 and 2010	F-3

	Consolidated Statements of Operations for the years ended December 31, 2011, 2010, and 2009	F-4

	Consolidated Statements of Stockholders' Equity for the years ended December 31, 2011, 2010, and 2009	F-5

	Consolidated Statements of Cash Flows for the years ended December 31, 2011, 2010, and 2009	F-6

	Notes to Consolidated Financial Statements	F-7

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Stockholders

U.S. NeuroSurgical, Inc.

Rockville, Maryland

We have audited the accompanying consolidated balance sheets of U.S. NeuroSurgical, Inc. and Subsidiaries (the “Company”) as of December 31, 2011 and 2010, and the related consolidated statements of operations, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2011. These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the consolidated financial position of the Company as of December 31, 2011 and 2010, and the results of their operations and their cash flows for each of the three years ended in the period ended December 31, 2011, in conformity with accounting principles generally accepted in the United States of America.

The Company was not required to have, nor were we engaged to perform, an examination of management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2011, included in Management’s Report on Internal Control over Financial Reporting, referred to in Item 9A of the Company’s Annual Report on Form 10-K, and accordingly, we do not express an opinion thereon.

Dixon Hughes Goodman LLP

March 30, 2012

F-2

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Consolidated Balance Sheets

	December 31,
	2011			2010
ASSETS
Current assets:
Cash and cash equivalents	$	830,000		$	820,000
Accounts receivable (net of allowance for doubtful accounts of $0 in 2011 and $36,000 in 2010)		313,000			421,000
Due from related parties		208,000			70,000
Other current assets		7,000			19,000
Total current assets		1,358,000			1,330,000
Investment in unconsolidated entities		471,000			200,000

Gamma knife (net of accumulated depreciation of $1,372,000 in 2011 and $2,937,000 in 2010)		2,221,000			2,980,000
Leasehold improvements (net of accumulated amortization of $134,000 in 2011 and $807,000 in 2010)		115,000			251,000

		2,336,000			3,231,000

Cash held in escrow		-			51,000

	$	4,165,000		$	4,812,000

LIABILITIES
Current liabilities:
Accounts payable and accrued expenses	$	24,000		$	113,000
Obligations under capital lease and loans payable- current portion		539,000			623,000

Total current liabilities		563,000			736,000

Asset retirement obligations		100,000			200,000
Obligations under capital lease and loans payable-net of current portion		2,163,000			2,568,000

Total liabilities		2,826,000			3,504,000

Commitments, litigation and other matters

STOCKHOLDERS’ EQUITY
Common stock - par value $.01; 25,000,0000 shares authorized; 7,797,185 and 7,747,185, shares issued and outstanding at December 31, 2011and 2010 respectively		78,000			77,000
Additional paid-in capital		3,100,000			3,099,000
Accumulated deficit		(1,839,000	)		(1,868,000	)
		1,339,000			1,308,000

	$	4,165,000		$	4,812,000

See notes to consolidated financial statements

F-3

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Consolidated Statements of Operations

	Years Ended December 31,
	2011			2010			2009

Revenue (Notes C and D)	$	2,060,000		$	1,916,000		$	1,472,000

Costs and expenses:
Patient expenses		884,000			603,000			411,000
Selling, general and administrative		947,000			979,000			878,000
		1,831,000			1,582,000			1,289,000
Income from operations		229,000			334,000			183,000

Interest expense		(177,000	)		(359,000	)		(291,000	)
Interest income		12,000			5,000			5,000
Income (loss) from investment in unconsolidated entities		26,000			(40,000	)		-

Income (loss) from continuing operations		90,000			(60,000	)		(103,000	)

Discontinued operations
Impairment loss		(89,000	)		-			-
Gain from operations of
Kansas City Gamma Knife Center		28,000			70,000			175,000
Revenue from litigation activity		-			459,000			-
		(61,000	)		529,000			175,000

Income before income taxes		29,000			469,000			72,000

Provision for income tax expense		-			-			-

Net Income	$	29,000		$	469,000		$	72,000

Basic and diluted net income per share	$	0.00		$	0.06		$	0.01

Net income (loss) per common share from continuing operations - basic and diluted	$	0.01		$	(0.01	)	$	(0.01	)

Net income (loss) per common share from discontinued operations - basic and diluted	$	(0.01	)	$	0.07		$	0.02

Weighted average common shares outstanding		7,751,432			7,747,185			7,747,185

See notes to consolidated financial statements

F-4

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Consolidated Statements of Stockholders' Equity

	Common Stock
	Number of Shares		Amount		Additional Paid-In Capital		Accumulated Deficit			Total

Balance - December 31, 2008		7,697,185	$	77,000	$	3,097,000	$	(2,409,000	)	$	765,000

Issuance of common stock as compensation		50,000		-		2,000		-			2,000
Net income for the year ended December 31, 2009		-		-		-		72,000			72,000
Balance - December 31, 2009		7,747,185	$	77,000	$	3,099,000	$	(2,337,000	)	$	839,000

Net income for the year ended
December 31, 2010		-		-		-		469,000			469,000
Balance - December 31, 2010		7,747,185	$	77,000	$	3,099,000	$	(1,868,000	)	$	1,308,000

Issuance of common stock as compensation		50,000		1,000		1,000					2,000
Net income for the year ended December 31, 2011		-		-		-		29,000			29,000
Balance - December 31, 2011		7,797,185	$	78,000	$	3,100,000	$	(1,839,000	)	$	1,339,000

See notes to consolidated financial statements

F-5

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

		Years Ended December 31,
		2011			2010			2009
Cash flows from operating activities:
Net income	$	29,000		$	469,000		$	72,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		661,000			906,000			780,000
(Income) loss from investment in unconsolidated entites		(26,000	)		40,000			-
Stock based compensation expense		2,000			-			2,000
Interest expense paid through a capital lease obligation		-			-			96,000
Impairment loss on discontinued operations		89,000			-			-
Changes in:
Accounts receivable		108,000			(141,000	)		(232,000	)
Other current assets		12,000			(32,000	)		(14,000	)
Due from related parties		(138,000	)		-			-
Accounts payable and accrued expenses		(89,000	)		46,000			11,000
Net cash provided by operating activities		648,000			1,288,000			715,000

Cash flows from investing activities:
Investment in unconsolidated entities		(245,000	)		(240,000	)		-
Cash from settlement of Gamma Knife equipment at Kansas City center		322,000			-			-
Net cash provided by (used in) investing activities		77,000			(240,000	)		-

Cash flows from financing activities:
Repayment of capital lease and loan obligations		(766,000	)		(902,000	)		(647,000	)
Decrease in cash held in escrow		51,000			1,000			-
Net cash used in financing activities		(715,000	)		(901,000	)		(647,000	)

Net change in cash and cash equivalents		10,000			147,000			68,000
Cash and cash equivalents - beginning of year		820,000			673,000			605,000
Cash and cash equivalents - end of year	$	830,000		$	820,000		$	673,000

Supplemental disclosures of cash flow information:
Cash paid for:
Interest	$	177,000		$	401,000		$	279,000

Supplemental disclosures of noncash investing and financing activities:
Leashold improvements financed by a capital lease	$	-		$	151,000		$	-
Equipment acquired through a capital lease	$	277,000		$	-		$	3,315,000

See notes to consolidated financial statements

F-6

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Note A – Organization and Business

U.S. NeuroSurgical, Inc. (“USN” or the “Company”), a Delaware corporation, was organized in July 1993 for the purpose of owning and operating stereotactic radiosurgery centers, utilizing the gamma knife technology. USN currently owns one gamma knife center on the premises of New York University Medical Center (“NYU”) in New York, New York. Management continues to explore opportunities to open additional gamma knife centers. USN's business strategy is to provide a mechanism whereby hospitals, physicians, and patients can have access to gamma knife treatment capability, a high capital cost item. USN provides the gamma knife to medical facilities on a "cost per treatment" basis. USN owns the gamma knife units, and is reimbursed by the facility where it is housed, based on utilization.

During the fourth quarter of 2007, USN formed a wholly-owned subsidiary, USN Corona, Inc.(“USNC”), to carry investments in Corona Gamma Knife, LLC and Neuro Partners, LLC. Those investments were formed to develop and manage a gamma knife center at San Antonio Community Hospital in Upland, California. (See Note C[1])

During 2010, USN expanded its market strategy to include opportunities to develop cancer centers featuring radiation therapy. These centers will utilize linear accelerators with IMRT (Intensity Modulated Radiation Therapy) and IGRT (Image Guided Radiation Therapy) capabilities. In 2010, the Company formed Florida Oncology Partners in partnership with local physicians and other investors. USNC owns a 20% interest in the venture. The center is located in Miami and opened in the second quarter of 2011. (See Note C[2])

In April 2011, the Company finalized certain transactions and agreements with Midwest Division – RMC, LLC (“RMC”), which owns the property and operates the medical facilities in Kansas City at which one of the Company’s gamma knife centers was located. The Company sold to RMC the Leksell Gamma Knife radiosurgery equipment, along with related supplies and inventory, located at the Kansas City center for an aggregate purchase price of $250,000. (See Note D)

In 2011, the Company formed Boca Oncology Partners, in partnership with local physicians and other investors. USNC owns a 22.5% interest in the venture. The center will be located in Boca Raton, Florida, and is scheduled to open in the third quarter of 2012. (See Note C[3])

Note B - The Company and its Significant Accounting Policies

[1]	Basis of presentation and consolidation

The consolidated financial statements include the accounts of USN and its wholly-owned subsidiaries, U.S. NeuroSurgical Physics, Inc. and USN Corona, Inc. All significant intercompany balances and transactions have been eliminated in consolidation.

[2]	Cash and cash equivalents:

The Company considers all highly liquid debt instruments purchased with a maturity of three months or less to be cash equivalents.

[3]	Investments in unconsolidated entities:

The Company accounts for its investment in unconsolidated entities by the equity method. The Company records its share of such earnings (loss) in the Consolidated Statement of Operations as “Income (loss) from investment in unconsolidated entities”. The carrying value of the Company’s investment in unconsolidated entities is recorded in the Consolidated Balance Sheets.

[4]	Revenue recognition:

Patient revenue is recognized when the gamma knife procedure is rendered.

F-7

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

[5]	Long-lived assets:

The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.

[6]	Depreciation and amortization:

The gamma knives are being depreciated on the straight-line method over an estimated useful life of seven years. The related costs incurred to reload the cobalt are being amortized on a straight-line method over an estimated useful life of five years. Leasehold improvements are being amortized on the straight-line method over 7 to 20 years, the shorter of useful life, or the life of the leases. Office furniture and computers are being depreciated on the straight-line method over their estimated useful lives ranging from 3 to 7 years. Depreciation expense for 2011, 2010, and 2009, was $637,000, $829,000, and $727,000, respectively. Amortization expense for 2011, 2010, and 2009, was $24,000, $77,000, and $53,000, respectively

[7]	Capital leases:

Capital lease obligations are amortized ratably over the original term of the lease agreement, beginning with the earlier of the date the leased assets are placed in service or the effective date of the lease as defined in the lease agreement.

[8]	Income taxes:

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets or liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce tax assets to amounts more likely than not to be realized.

[9]	Earnings per share:

Earnings per share are computed by dividing earnings available to common stockholders by the weighted average shares outstanding for the period. There were no common stock equivalents during 2011, 2010, and 2009, and therefore, no potential dilution for the periods presented.

[10]	Advertising costs:

The Company follows the policy of charging the costs of advertising to expense as incurred. There were no advertising costs in 2011, 2010, and 2009.

[11]	Allowance for doubtful accounts:

The Company evaluates each of its accounts receivable individually and provides a charge to income that is appropriate, in the opinion of management, to absorb probable credit losses. During 2011, the Company released $36,000 of allowance for doubtful accounts related to receivables that had been collected. The Company considers all accounts receivable to be collectible at December 31, 2011.

[12]	Estimates and assumptions:

F-8

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

[13]	Fair values of financial instruments:

The estimated fair value of financial instruments has been determined based on available market information and appropriate valuation methodologies. The carrying amounts of cash, accounts receivable, other current assets and accounts payable approximate fair value at December 31, 2011 and 2010 because of the short maturity of these financial instruments. The carrying values of the obligations under capital leases and loans payable approximate fair value because the interest rates on these instruments approximate the market rates at December 31, 2011 and 2010.

[14]	Credit risk:

At times, the Company may have cash and cash equivalents at a financial institution in excess of insured limits. The Company places its cash and cash equivalents with high credit quality financial institutions whose credit ratings are monitored by management to minimize credit risk. The uninsured portion of cash balances held in one bank totals $322,000 and $490,000 at December 31, 2011 and 2010, respectively. Accounts receivable consist primarily of amounts due from the medical centers. Historically, credit losses on accounts receivable have not been significant.

[15]	Asset retirement obligations:

The Company records liabilities for legal obligations associated with the retirement of tangible long-lived assets based on the estimated fair value of such liabilities. The estimated costs of these obligations are capitalized as costs of the assets subject to the retirement obligations and amortized over the lives of the assets.

[16]	Reclassifications:

Certain prior year balances have been reclassified to conform to current year presentation.

[17]	Recently Issued Accounting Standards:

In August 2010, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Updates (“ASU”) 2010-24, “Health Care Entities (Topic 954): Presentation of Insurance Claims and Related Insurance Recoveries,” which clarifies that a health care entity should not net insurance recoveries against a related claim liability. The guidance provided in this ASU is effective for the fiscal years beginning after December 15, 2010. This standard is not expected to have a significant effect on the Company’s consolidated financial statements.

In August 2010, the FASB issued ASU 2010-23, “Health Care Entities (Topic 954): Measuring Charity Care for Disclosure,” which prescribes a specific measurement basis of charity care for disclosure. The guidance provided in this ASU is effective for fiscal years beginning after December 15, 2010. This standard is not expected to have a significant effect on the Company’s consolidated financial statements.

In January 2010, the FASB issued ASU 2010-06, “Improving Disclosures About Fair Value Measurements” . The ASU amends FASB Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures (formerly FASB Statement No. 157, Fair Value Measurements) to add new requirements for disclosures about transfers into and out of Levels 1 and 2 and separate disclosures about purchases, sales, issuances, and settlements relating to Level 3 measurements. It also clarifies existing fair value disclosures about the level of disaggregation and about inputs and valuation techniques used to measure fair value. This standard is not expected to have a significant effect on the Company’s consolidated financial statements.

F-9

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Note C - Investment in Unconsolidated Entities

[1]	The Southern California Regional Gamma Knife Center

During 2007, the Company managed the formation of the Southern California Regional Gamma Knife Center at San Antonio Community Hospital (“SACH”) in Upland, California. The Company participates in the ownership and operation of the center through USNC. Corona Gamma Knife, LLC (“CGK”) is party to a 14-year agreement with SACH to renovate space in the hospital and install and operate a Leksell PERFEXION gamma knife. CGK leased the gamma knife from Neuro Partners LLC, which holds the gamma knife equipment. In addition to returns on its ownership interests, USNC expects to receive fees for management services relating to the facility.

USNC is a 20% owner of Neuro Partners LLC. USNC also owned initially 27% of CGK, but increased its ownership to 44% during 2011 to accommodate a member who desired to transfer his interest.

Because the Company’s interest in Neuro Partners LLC may be considered to be significant relative to its other assets and operations, the following summarized financial information with respect to Neuro Partners LLC is presented:

Neuro Partners LLC Condensed Income Statement Information

	Year Ended December 31,
	2011			2010			2009

Net sales	$	888,000		$	828,000		$	828,000

Net income	$	(76,000	)	$	(346,000	)	$	(112,000	)

USNC's equity in loss of Neuro Partners LLC	$	(15,000	)	$	(69,000	)	$	(22,000	)

Neuro Partners LLC Condensed Balance Sheet Information

	December 31,
	2011			2010

Current assets	$	482,000		$	344,000

Noncurrent assets	$	2,603,000		$	3,532,000

Total assets	$	3,085,000		$	3,876,000

Current liabilities	$	22,000		$	95,000

Noncurrent liabilities	$	3,144,000		$	3,948,000

Equity	$	(81,000	)	$	(167,000	)

Total liabilities and equity	$	3,085,000		$	3,876,000

F-10

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

[2]	Florida Oncology Partners

During the quarter ended September 30, 2010, the Company participated in the formation of Florida Oncology Partners(“FOP”), consisting of Florida Oncology Partners, LLC and Florida Oncology Partners RE, LLC, which operates a cancer center located in West Kendall, Florida. The center diagnoses and treats patients utilizing a Varian Rapid Arc linear accelerator and a GE CT scanner. USNC owns a 20% interest in FOP and invested $200,000. The remaining 80% is owned by other outside investors. The center opened and treated its first patient in May 2011. The Company’s recorded investment in FOP is $270,000 at December 31, 2011.

The Company entered into a note receivable with FOP for working capital purposes, for $200,000 in August 2011, bearing interest at 10% per annum and due in August 2012. The note receivable and accrued interest total $208,000 at December 31, 2011. These amounts are included in due from related parties. The Company’s maximum exposure to loss is the amount invested in FOP and the amount of note receivable and accrued interest totaling $478,000. Due to the outstanding loan, FOP is considered to be a variable interest entity of the Company. However, as the Company is not deemed to be the primary beneficiary of FOP since it does not have the power to direct the activities that most significantly impact its economic performance, certain disclosures are required rather than consolidation.

Because the Company’s interest in Florida Oncology Partners, LLC may be considered to be significant relative to its other assets and operations, the following summarized financial information with respect to Florida Oncology Partners, LLC is presented:

F-11

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Florida Oncology Partners LLC Condensed Income Statement Information

	Year Ended December 31,
	2011		2010

Net sales	$	2,005,000	$	-

Net income (loss)	$	534,000	$	(118,000	)

USNC's equity in income of Florida Oncology Partners LLC	$	107,000	$	(24,000	)

Florida Oncology Partners LLC Condensed Balance Sheet Information

	December 31,
	2011		2010

Current assets	$	1,297,000	$	229,000

Noncurrent assets	$	5,467,000	$	154,000
Total assets	$	6,764,000	$	383,000

Current liabilities	$	905,000	$	-

Noncurrent liabilities	$	4,944,000	$	-

Equity	$	915,000	$	383,000
Total liabilities and equity	$	6,764,000	$	383,000

F-12

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

[3]	Boca Oncology Partners

Note D - – Sale of Kansas City Gamma Knife Center and Focus on Continuing Businesses

[1]	Sale of Gamma Knife Equipment at Kansas City Center

The Company sold to RMC the Leksell gamma knife radiosurgery equipment, along with related supplies and inventory, located at the Kansas City center for an aggregate purchase price of $250,000. RMC has also indicated its intention to employ the physicist who, up to the time of the sale, operated the gamma knife equipment on the Company’s behalf. The Company will, upon request of RMC and at RMC’s cost and expense, assist RMC in replenishing the gamma knife equipment’s radioactive cobalt-60 as is necessary for the proper operation of the gamma knife.

[2]	Termination of Arrangements with RMC and Settlement of Outstanding Claims

In connection with the sale of the gamma knife equipment described above, the Company and RMC entered into an agreement terminating the Gamma Knife Neuroradiosurgery Equipment Agreement and the Ground Lease Agreement, each originally entered into between the parties in 1993, and concluded all arrangements between the parties relating to the operation of the gamma knife center and the lease of the premises. Immediately preceding the termination of these agreements, the Company and RMC satisfied all outstanding obligations between the parties, including the release of cash held in escrow, resulting in a net payment of approximately $385,000, including payments of net settlement proceeds of $72,000 for prior year disputed revenues and outstanding accounts receivable of $313,000, to the Company. In connection with the agreement, the parties also entered into a mutual release respecting all other outstanding claims and disputes between them relating to the Kansas City center.

The Company agreed with RMC that through September 2015, it will not participate in gamma knife operations in the states of Missouri, Kansas, Nebraska, Iowa and Arkansas.

F-13

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

[3]	Effect of Discontinued Kansas City Operations

The major classes of the assets and liabilities included as part of the disposal group are as follow:

	December 31, 2010
Assets
Gamma Knife (net of accumulated depreciation of $2,136,000)	$	464,000
Leasehold improvements (net of accumulated amorti-zation of $658,000)		150,000

	$	614,000

Liabilities
Asset retirement obligations	$	100,000

The amounts of revenue and pretax profit or loss reported in discontinued operations are as follow:

	Year Ended December 31,
	2011			2010		2009

Revenue from operations	$	184,000		$	641,000	$	789,000

Pretax profit (loss)		(61,000	)		529,000		175,000

Included in the pretax loss for the year ended December 31, 2011 is an impairment recorded on the gamma knife for the Kansas City center totaling $161,000. This impairment loss is being offset by $72,000, for a net impairment loss of $89,000, received by the Company attributed to revenues from prior years which had been disputed by RMC, and, as such, never recorded by the Company due to the uncertainty of collection.

Note E - Agreement With New York University on Behalf of New York University Medical Center (NYU)

During November 1996, USN entered into a neuroradiosurgery equipment agreement (NYU agreement) with NYU for a period of seven years (the term), with an option for NYU to extend the term for successive three-year periods or to purchase the gamma knife equipment at an appraised market value price. USN may negotiate the purchase price and upon failure of the parties to agree may request that the facility be closed. All costs associated with closing and restoring the facility to its original condition are the responsibility of USN. The equipment agreement, among other matters, requires USN to provide (i) the use of the gamma knife equipment to NYU, (ii) training necessary for the proper operation of the gamma knife equipment, (iii) sufficient supplies for the equipment, (iv) the repair and maintenance of the equipment, (v) all basic hardware and software upgrades to the equipment and, (vi) an uptime guarantee. In return, NYU pays USN a scheduled fee based on the number of patient procedures performed. The Company derived patient revenue from the NYU center of $2,029,000, $1,907,000 and $1,464,000, for 2011, 2010 and 2009, respectively.

In 2004, the NYU agreement was extended through March 2009. In 2008, the NYU agreement was extended for an additional 12 years through March 2021. To secure this extension, USN agreed to install a new gamma knife PERFEXION model. The new equipment and certain space improvements, costing approximately $3,742,000 in total, was financed through a seven-year lease arrangement. The amendment provides for a payment to USN of a flat fee for each patient procedure performed.

F-14

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Note F - Obligation Under Capital Lease and Loans Payable

I n March 2009 the Company installed a PERFEXION model gamma knife at the NYU center with a seven year lease from Elekta Capital. The amount financed, covering the cost of the new gamma knife equipment and certain space improvements, is approximately $3,742,000 in total. The monthly payment is $63,000 per month, at an implicit interest rate of approximately 11%.

The obligations under the capital leases and loans payable are as follows:

	December 31,
	2011			2010

Capital leases - Gamma Knife	$	2,702,000		$	3,191,000

Less current portion		(539,000	)		(623,000	)

	$	2,163,000		$	2,568,000

The following is an analysis of the leased assets included in property and equipment:

	2011			2010

Capitalized costs	$	3,742,000		$	6,067,000
Less - accumulated depreciation		(1,405,000	)		(2,985,000	)

Capitalized lease equipment and improvements- reported as property and equipment - net	$	2,337,000		$	3,082,000

Future payments as of December 31, 2011 on the equipment leases and loans are as follows:

Year Ending December 31,

2012	$	758,000
2013		758,000
2014		758,000
2015		758,000
2016		229,000
		3,261,000
Less interest		(559,000	)
Present value of net minimum obligation	$	2,702,000

Note G – Asset Retirement Obligations

During 2003, the Company recorded asset retirement obligations of $200,000 based upon estimated amounts, consisting principally of removal of Gamma Knives and disposal of regulated materials and the restoration of facilities at NYU and RMC. However, during 2011, when the Company sold the equipment at RMC, the asset retirement obligation was reduced to $100,000. Such liabilities have been measured using current information, current assumptions and current interest rates and have been recorded with a corresponding increase in the carrying value of the gamma knives. The Company is amortizing such costs over the lives of the respective useful lives from inception.

F-15

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

	2011			2010

Asset retirement obligations, beginning of year	$	200,000		$	200,000
Liabilities settled during the year		(100,000	)		-

Asset retirement of obligations, end of the year	$	100,000		$	200,000

No change in the estimate for asset retirement obligations was necessary in conjunction with the 2009 gamma knife replacements.

Note H - Stock Based Compensation

During 2009, and again in 2011, the Company awarded 50,000 shares of its common stock to an employee as additional compensation. The fair value of each award was determined by management to be approximately $2,000. Compensation expense of $2,000 (common stock of $1,000 and additional paid in capital of $1,000) was recorded by the Company to account for this transaction in 2009 and 2011.

Note I - Concentrations

For the last nine months of the year ended December 31, 2011, the Company derived all of its patient revenue from NYU. NYU also represented 100% of the accounts receivable balance at December 31, 2011.

For the first three months of 2011, and the years ended December 2010 and 2009, the Company derived all of its patient revenue from NYU and RMC. NYU and RMC also accounted for 100% of the accounts receivable at December 31, 2010 and 2009.

Note J - Taxes

A reconciliation of the tax provision (benefit) calculated at the statutory federal income tax rate with amounts reported follows:

	Year Ended December 31,
	2011			2010			2009

Income tax at the federal statutory rate	$	7,000		$	173,000		$	25,000
State income tax, net of federal taxes		1,000			17,000			4,000
Other		18,000			(30,000	)		(16,000	)
Change in valuation allowance		(26,000	)		(160,000	)		(13,000	)

Income tax provision (benefit)	$	-		$	-		$	-

F-16

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Items which give rise to deferred tax assets and liabilities are as follows:

	December 31,
	2011			2010
Deferred tax asset:
Net operating loss	$	578,000		$	634,000

Deferred tax liability:
Excess of book depreciation over tax depreciation		(406,000	)		(406,000	)
Net effect of the conversion from accrual basis of accounting
to cash basis accounting for tax purposes primarily related		-			-
to accounts receivable, prepaid expenses, and accounts payable		(116,000	)		(146,000	)
		(522,000	)		(552,000	)
Valuation allowance		(56,000	)		(82,000	)
Net deferred tax asset	$	(578,000	)	$	(634,000	)

A full valuation allowance has been provided at December 31, 2011 and 2010, due principally to the evidence that it is more likely than not that the deferred tax assets will not be realized because certain loss carryforwards will not be utilized prior to expiration. The components of the valuation allowance are as follows:

	Beginning Balance		Additions		Deductions			Ending Balance

December 31, 2011	$	82,000	$	-	$	(26,000	)	$	56,000
December 31, 2010	$	242,000	$	-	$	160,000		$	82,000

On December 31, 2011, the Company had loss carryforwards of $1,697,690, which may be offset against future taxable income. If not used, the carryforwards will expire as follows:

2025		37,730
2026		401,734
2027		76,326
2028		497
2029		1,134,377
2030		47,026
	$	1,697,690

The Company adopted the accounting provisions for Accounting for Uncertainty in Income Taxes , effective January 1, 2007. It provides a comprehensive model for how the Company should recognize, measure, present, and disclose in its financial statements uncertain tax positions that the Company has taken or expects to take on tax return. The Company had no uncertain material tax positions at December 31, 2011 and 2010.

The Company files income tax returns in the U.S. federal jurisdiction and the State of Maryland. With few possible exceptions, the Company is no longer subject to U.S. or state income tax examinations by tax authorities for years before 2008.

F-17

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Note K – Commitments and Contingencies

[1]

Leases:

The Company leases office space under an operating lease expiring March 2013. The terms of the lease include an escalation clause for a portion of certain operating expenses. At December 31, 2011, the annual future minimum rental payments under the operating lease and the ground lease referred to in Note D(2) are as follows:

Year Ending December 31,

2012	$	47,000
2013		12,000
	$	59,000

Rent expense was approximately $47,000, $48,000 and $36,000, and for 2011, 2010, and 2009, respectively.

[2]	Gamma Knives:

In 2009, the Company installed a new gamma knife PERFEXION model at the NYU Medical Center. This new equipment and certain space improvements, costing approximately $3,742,000 in total, was financed through a seven-year lease arrangement.

To maintain efficient operation , the Company is required to reload cobalt for each gamma knife every 5 to 10 years.

[3]	Maintenance Contract:

In September of 2010 the Company entered into a maintenance agreement with Elekta, the supplier of the gamma knife PERFEXION model, for 5 years. The monthly payment for this maintenance agreement is $20,000.

[4]	Guarantee of Lease Obligation:

USNC is a 20% guarantor on Neuro Partners, LLC’s $3.5 million seven-year lease with respect to the gamma knife equipment and certain leasehold improvements at the San Antonio Community Hospital in Upland, California, where the equipment is located. In 2014, Neuro Partners, LLC has the option to purchase the gamma knife for $490,000.

[5]	Product liability:

Note L - Employees' 401(k) and IRA Plans

The Company discontinued its 401(k) on December 31, 2006. The Company established a Company IRA covering all employees. The plan allows participants to make pre-tax contributions and the Company may, at its discretion, match certain percentages of the employee contribution. Amounts contributed to the plan are deposited into a trust fund administered by independent trustees. The Company made a discretionary matching IRA contribution for 2011 and 2010 of $9,000 and $14,000 respectively.

Note M - Related Party Transactions

The Company and its President are parties to an employment agreement giving either party the option to terminate employment by giving the other party six-months written notice. The President's compensation for 2011, 2010 and 2009, was $300,000 each year.

F-18

Table of Contents

U.S. NEUROSURGICAL, INC. AND SUBSIDIARIES

Note N – Quarterly Results of Operations (unaudited)

The following is a summary of the unaudited 2009, 2010 and 2011 quarterly results of operations: (in thousands)

	Three Months Ended
	March 31				June 30		September 30			December 31
2011
Revenue from continuing operations		$	496		$	548	$	503		$	513
Income (loss) from operations			56			173		(29	)		29
Income (loss) from discontinued operations			(61	)		-		-			-
Net income (loss)			(74	)		106		(131	)		128
Basic and diluted income (loss) per common share			(0.01	)		0.01		(0.02	)		0.02

2010
Revenue from continuing operations		$	389		$	472	$	548		$	507
Income from operations			26			101		73			134
Income (loss) from discontinued operations			(4	)		381		73			79
Net income (loss)			(67	)		395		55			86
Basic and diluted income (loss) per common share			(0.01	)		0.05		0.01			0.01

2009
Revenue from continuing operations		$	166		$	467	$	441		$	398
Income (loss) from operations			(38	)		131		93			(3	)
Income (loss) from discontinued operations			29			71		64			11
Net income (loss)			(33	)		86		40			(21	)
Basic and diluted income (loss) per common share			0.00			0.01		0.01			0.00

Note O – Subsequent Events

Early in the first quarter of 2012, BOPRE sold 15% of its interest in Boca West IMP, LLC. As a result of the transactions, USNC’s interest in BOPRE was reduced to 19%. The proceeds to USNC were $27,500.

Also during the first quarter of 2012 BOP sold a 50% interest to new investors. As a result, USNC’s interest in BOP was reduced to 11.25%. The proceeds to USNC were $56,250.

F- 19

TABLE OF CONTENTS

Part I Item 1. Business Item 1A. Risk Factors Item 1B. Unresolved Staff Comments Item 2. Properties Item 3. Legal Proceedings Item 4. Mine Safety Disclosures Part II Item 5. Market For Registrant S Common Equity, Related Stockholder Matters and Issuer Purchases Of Equity Securities Item 6. Selected Financial Data Item 7. Management's Discussion and Analysis Of Financial Condition and Results Of Operation Item 7A. Qualitative and Quantitative Disclosures About Market Risk Item 8. Financial Statements and Supplementary Data Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure Item 9A. Controls and Procedures Item 9B. Other Information Part III Item 10. Directors, Executive and Corporate Governance Item 12. Security Ownership Of Certain Beneficial Owners and Management and Related Stockholder Matters Item 13. Certain Relationships and Related Transactions, and Director Independence Item 14. Principal Accounting Fees and Services Part IV Item 15. Exhibits, Financial Statement Schedules

Exhibits

31.1* Certifications of CEO and CFO pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1* Certifications of CEO and CFO pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

EHSI 10-K Fiscal year ended Dec. 31, 2011

Exhibits