


GEMW HEALTHCARE INVESTMENT LP
CALIFORNIA ADVANCED IMAGING MEDICAL ASSOCIATES, INC.
PERMANENTE DENTAL ASSOCIATES, P.C.
CENTRAL ANESTHESIA SERVICE EXCHANGE MEDICAL GROUP, INC.
SAN DIEGO DIAGNOSTIC RADIOLOGY MEDICAL GROUP, INC.
OREGON EMERGENCY PHYSICIANS P.C.
NEWPORT HARBOR ANESTHESIA CONSULTANTS MEDICAL GROUP, INC.
SUTTER MEDICAL GROUP OF THE REDWOODS, INC.
ALLIED ANESTHESIA MEDICAL GROUP, INC.
VANTAGE RADIOLOGY & DIAGNOSTIC SERVICES, A PROFESSIONAL SERVICE CORP