1. NATURE OF BUSINESS	12 Months Ended
Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
NATURE OF BUSINESS	At December 31, 2013, we operated directly or indirectly through joint ventures, 250 centers located in California, Maryland, Florida, Delaware, New Jersey, Rhode Island and New York. We provide diagnostic imaging services including magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET), nuclear medicine, mammography, ultrasound, diagnostic radiology, or X-ray, fluoroscopy and other related procedures. Our operations comprise a single segment for financial reporting purposes. The consolidated financial statements include the accounts of Radnet Management, Inc. (or “Radnet Management”) and Beverly Radiology Medical Group III, a professional partnership (“BRMG”). The consolidated financial statements also include Radnet Management I, Inc., Radnet Management II, Inc., Radiologix, Inc., Radnet Managed Imaging Services, Inc., Delaware Imaging Partners, Inc., New Jersey Imaging Partners, Inc., Raven Holdings U.S., Inc. and Diagnostic Imaging Services, Inc. (“DIS”), all wholly owned subsidiaries of Radnet Management. All of these affiliated entities are referred to collectively as “RadNet”, “we”, “us”, “our” or the “Company” in this report. Accounting Standards Codification (“ASC”) Section 810-10-15-14 stipulates that generally any entity with a) insufficient equity to finance its activities without additional subordinated financial support provided by any parties, or b) equity holders that, as a group, lack the characteristics specified in the Codification which evidence a controlling financial interest, is considered a Variable Interest Entity (“VIE”). We consolidate all voting interest entities in which we own a majority voting interest and all VIEs for which we are the primary beneficiary. We determine whether we are the primary beneficiary of a VIE through a qualitative analysis that identifies which variable interest holder has the controlling financial interest in the VIE. The variable interest holder who has both of the following has the controlling financial interest and is the primary beneficiary: (1) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (2) the obligation to absorb losses of, or the right to receive benefits from, the VIE that could potentially be significant to the VIE. In performing our analysis, we consider all relevant facts and circumstances, including: the design and activities of the VIE, the terms of the contracts the VIE has entered into, the nature of the VIE’s variable interests issued and how they were negotiated with or marketed to potential investors, and which parties participated significantly in the design or redesign of the entity. Howard G. Berger, M.D. is our President and Chief Executive Officer, a member of our Board of Directors and is deemed to be the beneficial owner, directly and indirectly, of approximately 13.5% of our outstanding common stock. Dr. Berger also owns, indirectly, 99% of the equity interests in BRMG. BRMG provides all of the professional medical services at the majority of our facilities located in California under a management agreement with us, and employs physicians or contracts with various other independent physicians and physician groups to provide the professional medical services at most of our other California facilities. We generally obtain professional medical services from BRMG in California, rather than provide such services directly or through subsidiaries, in order to comply with California’s prohibition against the corporate practice of medicine. However, as a result of our close relationship with Dr. Berger and BRMG, we believe that we are able to better ensure that medical service is provided at our California facilities in a manner consistent with our needs and expectations and those of our referring physicians, patients and payors than if we obtained these services from unaffiliated physician groups. BRMG is a partnership of ProNet Imaging Medical Group, Inc., Breastlink Medical Group, Inc. and Beverly Radiology Medical Group, Inc., each of which are 99% or 100% owned by Dr. Berger. John V. Crues III, M.D. is our Medical Director, a member of our Board of Directors and a 1% owner of BRMG. Dr. Crues also owns a controlling interest in three medical groups (“Crues Entities”) which provide professional medical services at our imaging facilities located in New York, New York, two of which we acquired as part of our December 31, 2012 acquisition of Lenox Hill and one in connection with our August 1, 2013 acquisition of Manhattan Diagnostic Radiology. RadNet provides non-medical, technical and administrative services to BRMG and the Crues Entities for which it receives a management fee, pursuant to the related management agreements. Through the management agreement and our relationship with Dr. Berger and Dr. Crues, we have exclusive authority over all non-medical decision making related to the ongoing business operations of BRMG and the Crues Entities. Through our management agreement with BRMG and the Crues Entities, we determine the annual budget of BRMG and the Crues Entities and make all physician employment decisions. BRMG and the Crues Entities both have insignificant operating assets and liabilities, and de minimis equity. Through the management agreement with us, all cash flows of BRMG and the Crues Entities are transferred to us. We have determined that BRMG and the Crues Entities are variable interest entities, and that we are the primary beneficiary, and consequently, we consolidate the revenue and expenses, assets and liabilities of each. BRMG and the Crues Entities on a combined basis recognized $76.7 million, $53.4 million and $53.9 million of revenue, net of management service fees to RadNet, for the years ended December 31, 2013, 2012 and 2011, respectively, and $76.7 million, $53.4 million and $53.9 million of operating expenses for the years ended December 31, 2013, 2012 and 2011, respectively. RadNet recognized $267.6 million, $208.7 million and $196.7 million of net revenues for the years ended December 31, 2013, 2012 and 2011, respectively, for management services provided to BRMG and the Crues Entities relating primarily to the technical portion of total billed revenue. The cash flows of BRMG and the Crues Entities are included in the accompanying consolidated statements of cash flows. All intercompany balances and transactions have been eliminated in consolidation. In our consolidated balance sheets at December 31, 2013 and 2012, we have included approximately $65.2 million and $51.8 million, respectively, of accounts receivable related to BRMG and the Crues Entities. The creditors of BRMG and the Crues Entities do not have recourse to our general credit and there are no other arrangements that could expose us to losses on behalf of BRMG and the Crues Entities. However, both BRMG and the Crues Entities are managed to recognize no net income or net loss and, therefore, RadNet may be required to provide financial support to cover any operating expenses in excess of operating revenues. Aside from centers in California where we contract with BRMG for the provision of professional medical services and centers in New York, New York, where we contract with the Crues Entities for the provision of professional medical services, at the remaining centers in California and at all of the centers which are located outside of California and New York, New York, we have entered into long-term contracts with independent radiology groups in the area to provide physician services at those facilities. These third party radiology practices provide professional services, including supervision and interpretation of diagnostic imaging procedures, in our diagnostic imaging centers. The radiology practices maintain full control over the provision of professional services. The contracted radiology practices generally have outstanding physician and practice credentials and reputations; strong competitive market positions; a broad sub-specialty mix of physicians; a history of growth and potential for continued growth. In these facilities we enter into long-term agreements with radiology practice groups (typically 40 years). Under these arrangements, in addition to obtaining technical fees for the use of our diagnostic imaging equipment and the provision of technical services, we provide management services and receive a fee based on the practice group’s professional revenue, including revenue derived outside of our diagnostic imaging centers. We own the diagnostic imaging equipment and, therefore, receive 100% of the technical reimbursements associated with imaging procedures. The radiology practice groups retain the professional reimbursements associated with imaging procedures after deducting management service fees paid to us. We have no financial controlling interest in the independent (non-BRMG/Crues Entity) radiology practices; accordingly, we do not consolidate the financial statements of those practices in our consolidated financial statements.

1. NATURE OF BUSINESS

12 Months Ended

Dec. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

At December 31, 2013, we operated directly or indirectly through joint ventures, 250 centers located in California, Maryland, Florida, Delaware, New Jersey, Rhode Island and New York. We provide diagnostic imaging services including magnetic resonance imaging (MRI), computed tomography (CT), positron emission tomography (PET), nuclear medicine, mammography, ultrasound, diagnostic radiology, or X-ray, fluoroscopy and other related procedures. Our operations comprise a single segment for financial reporting purposes.

The consolidated financial statements include the accounts of Radnet Management, Inc. (or “Radnet Management”) and Beverly Radiology Medical Group III, a professional partnership (“BRMG”). The consolidated financial statements also include Radnet Management I, Inc., Radnet Management II, Inc., Radiologix, Inc., Radnet Managed Imaging Services, Inc., Delaware Imaging Partners, Inc., New Jersey Imaging Partners, Inc., Raven Holdings U.S., Inc. and Diagnostic Imaging Services, Inc. (“DIS”), all wholly owned subsidiaries of Radnet Management. All of these affiliated entities are referred to collectively as “RadNet”, “we”, “us”, “our” or the “Company” in this report.

Accounting Standards Codification (“ASC”) Section 810-10-15-14 stipulates that generally any entity with a) insufficient equity to finance its activities without additional subordinated financial support provided by any parties, or b) equity holders that, as a group, lack the characteristics specified in the Codification which evidence a controlling financial interest, is considered a Variable Interest Entity (“VIE”). We consolidate all voting interest entities in which we own a majority voting interest and all VIEs for which we are the primary beneficiary. We determine whether we are the primary beneficiary of a VIE through a qualitative analysis that identifies which variable interest holder has the controlling financial interest in the VIE. The variable interest holder who has both of the following has the controlling financial interest and is the primary beneficiary: (1) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (2) the obligation to absorb losses of, or the right to receive benefits from, the VIE that could potentially be significant to the VIE. In performing our analysis, we consider all relevant facts and circumstances, including: the design and activities of the VIE, the terms of the contracts the VIE has entered into, the nature of the VIE’s variable interests issued and how they were negotiated with or marketed to potential investors, and which parties participated significantly in the design or redesign of the entity.

Howard G. Berger, M.D. is our President and Chief Executive Officer, a member of our Board of Directors and is deemed to be the beneficial owner, directly and indirectly, of approximately 13.5% of our outstanding common stock. Dr. Berger also owns, indirectly, 99% of the equity interests in BRMG. BRMG provides all of the professional medical services at the majority of our facilities located in California under a management agreement with us, and employs physicians or contracts with various other independent physicians and physician groups to provide the professional medical services at most of our other California facilities. We generally obtain professional medical services from BRMG in California, rather than provide such services directly or through subsidiaries, in order to comply with California’s prohibition against the corporate practice of medicine. However, as a result of our close relationship with Dr. Berger and BRMG, we believe that we are able to better ensure that medical service is provided at our California facilities in a manner consistent with our needs and expectations and those of our referring physicians, patients and payors than if we obtained these services from unaffiliated physician groups. BRMG is a partnership of ProNet Imaging Medical Group, Inc., Breastlink Medical Group, Inc. and Beverly Radiology Medical Group, Inc., each of which are 99% or 100% owned by Dr. Berger.

John V. Crues III, M.D. is our Medical Director, a member of our Board of Directors and a 1% owner of BRMG. Dr. Crues also owns a controlling interest in three medical groups (“Crues Entities”) which provide professional medical services at our imaging facilities located in New York, New York, two of which we acquired as part of our December 31, 2012 acquisition of Lenox Hill and one in connection with our August 1, 2013 acquisition of Manhattan Diagnostic Radiology.

RadNet provides non-medical, technical and administrative services to BRMG and the Crues Entities for which it receives a management fee, pursuant to the related management agreements. Through the management agreement and our relationship with Dr. Berger and Dr. Crues, we have exclusive authority over all non-medical decision making related to the ongoing business operations of BRMG and the Crues Entities. Through our management agreement with BRMG and the Crues Entities, we determine the annual budget of BRMG and the Crues Entities and make all physician employment decisions. BRMG and the Crues Entities both have insignificant operating assets and liabilities, and de minimis equity. Through the management agreement with us, all cash flows of BRMG and the Crues Entities are transferred to us.

We have determined that BRMG and the Crues Entities are variable interest entities, and that we are the primary beneficiary, and consequently, we consolidate the revenue and expenses, assets and liabilities of each. BRMG and the Crues Entities on a combined basis recognized $76.7 million, $53.4 million and $53.9 million of revenue, net of management service fees to RadNet, for the years ended December 31, 2013, 2012 and 2011, respectively, and $76.7 million, $53.4 million and $53.9 million of operating expenses for the years ended December 31, 2013, 2012 and 2011, respectively. RadNet recognized $267.6 million, $208.7 million and $196.7 million of net revenues for the years ended December 31, 2013, 2012 and 2011, respectively, for management services provided to BRMG and the Crues Entities relating primarily to the technical portion of total billed revenue. The cash flows of BRMG and the Crues Entities are included in the accompanying consolidated statements of cash flows. All intercompany balances and transactions have been eliminated in consolidation. In our consolidated balance sheets at December 31, 2013 and 2012, we have included approximately $65.2 million and $51.8 million, respectively, of accounts receivable related to BRMG and the Crues Entities.

The creditors of BRMG and the Crues Entities do not have recourse to our general credit and there are no other arrangements that could expose us to losses on behalf of BRMG and the Crues Entities. However, both BRMG and the Crues Entities are managed to recognize no net income or net loss and, therefore, RadNet may be required to provide financial support to cover any operating expenses in excess of operating revenues.

Aside from centers in California where we contract with BRMG for the provision of professional medical services and centers in New York, New York, where we contract with the Crues Entities for the provision of professional medical services, at the remaining centers in California and at all of the centers which are located outside of California and New York, New York, we have entered into long-term contracts with independent radiology groups in the area to provide physician services at those facilities. These third party radiology practices provide professional services, including supervision and interpretation of diagnostic imaging procedures, in our diagnostic imaging centers. The radiology practices maintain full control over the provision of professional services. The contracted radiology practices generally have outstanding physician and practice credentials and reputations; strong competitive market positions; a broad sub-specialty mix of physicians; a history of growth and potential for continued growth. In these facilities we enter into long-term agreements with radiology practice groups (typically 40 years). Under these arrangements, in addition to obtaining technical fees for the use of our diagnostic imaging equipment and the provision of technical services, we provide management services and receive a fee based on the practice group’s professional revenue, including revenue derived outside of our diagnostic imaging centers. We own the diagnostic imaging equipment and, therefore, receive 100% of the technical reimbursements associated with imaging procedures. The radiology practice groups retain the professional reimbursements associated with imaging procedures after deducting management service fees paid to us. We have no financial controlling interest in the independent (non-BRMG/Crues Entity) radiology practices; accordingly, we do not consolidate the financial statements of those practices in our consolidated financial statements.