Exhibit 21. The subsidiaries of American Shared Hospital Services are: ACHES Insurance Services, Inc. a California corporation African American Church Health and Economic Services, Inc. a California corporation American Shared Radiosurgery Services a California corporation Embarcadero Transition Corp. III a Delaware corporation GK Financing, LLC a California limited liability company MedLeader.com, Inc. a California corporation MMRI, Inc. a California corporation OR21, Inc. a California corporation