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                                                                      EXHIBIT 21


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NAME                                          STATE OF INCORPORATION

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BAB Rad, Inc.                                 New York

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Breathco Incorporated                         Florida

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CCC Indiana Lithotripsy, Inc.                 Florida

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CCC Lithotripsy, Inc.                         Florida

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CCC National Lithotripsy, Inc.                Florida

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Clinical Marketing, Ltd.                      Delaware

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Clinical Studies, Ltd.                        Delaware

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College Park Radiation Care, Inc.             Delaware

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Dasco Development West                        CA

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DDC Real Estate Corp.                         Florida
fka Dasco Development Corporation, Inc.
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Deer Co., Inc.                                New York

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Dekalb Endoscopy Center, Inc.                 Georgia

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Diagnostic Imaging of Baltimore, Inc.         Arizona

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First Choice Health Care Services of          Delaware
 Ft Lauderdale, Inc.

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Innovative Clinical Solutions, Ltd.           Delaware

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Lithotripsy America, Inc.                     Florida

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Montgomery Radiation Care at Baptist, Inc.    Delaware

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Nashville Radiation Care, Inc.                Delaware

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Oncology Therapies, Inc.                      Delaware

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Oncology Therapies of America, Inc.           Florida
fka Oncology Therapies, Inc.

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PhyMatrix of Central Georgia, Inc.            Delaware

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PhyMatrix Diagnostic Imaging,Inc.             Delaware

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PhyMatrix of Long Island, LLC                 Delaware

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PhyMatrix Management Co., Inc.                Florida
fka Phychoice, Inc.

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PhyMatrix of Manatee County, Inc.             Delaware

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PhyMatrix Network Management IPA II, Inc.     New York

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PhyMatrix Network Management IPA I, Inc.      New York

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PhyMatrix Network Management, Inc.            Delaware

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PhyMatrix Northeast, Inc.                     Delaware

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PhyMatrix Physician Management, Inc.          Delaware

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PhyMatrix of Central Georgia, Inc.            Delaware

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PhyMatrix Pulmonary Network, Inc.             Florida

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PhyMatrix Urology Network, Inc.               Delaware

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Physician Consultant and Management Company   North Carolina
of North Carolina, Inc.

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Physician Consultant and Management Company   New York
of New York, Inc.

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Physician Consultant and Management           Florida
Company, Inc.

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Urology Consultant of South Florida, Inc.     Florida

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