EX-21.1 2 radnet_10k-ex2101.txt SUBSIDIARIES EXHIBIT 21 SUBSIDIARIES REGISTRANT'S PERCENTAGE STATE OF SUBSIDIARIES OWNERSHIP INCORPORATION ------------ --------- ------------- RadNet Management, Inc. 100% California RadNet Managed Imaging Services, Inc. 100% California Diagnostic Imaging Services, Inc. 100% Delaware Primedex Corporation 100% California Radnet Management I, Inc. 100% California Radnet Management II, Inc. 100% California Radnet Sub, Inc. 100% California SoCal MR Site Management, Inc. 100% California FRI, Inc. 100% California Radiologix, Inc. 100% Delaware Advanced Imaging Partners, Inc. 100% Delaware Ide Imaging Partners, Inc. 100% Delaware Mid Rockland Imaging Partners, Inc. 100% Delaware Pacific Imaging Partners, Inc. 100% California Questar Imaging, Inc 100% Florida Treasure Coast Imaging Partners, Inc. 100% Delaware Community Imaging Partners, Inc. 100% Delaware Radiology and Nuclear Medicine Imaging Partners, Inc. 100% Delaware Valley Imaging Partners Inc. 100% California Questar Duluth, Inc. 100% Florida Questar Los Alamitos,Inc. 100% Florida Questar Victorville, Inc. 100% Florida Rocky Mountain OpenScan MRI, LLC 100% Colorado FRI II, Inc 100% California Rolling Oaks Imaging Corporation 100% California Rolling Oaks Radiology, Inc. 100% California Delaware Imaging Partners, Inc. 100% Delaware