Prospect Medical Group, Inc., an affiliate of Prospect Medical Holdings, Inc., has completed the following acquisitions since 1997:

Sierra Primary Care Medical Group, Inc. (1997)
Pegasus Medical Group, Inc. (1997)
Antelope Valley Medical Associates, Inc. (1998)
Prospect Health Source Medical Group, Inc. (2001)
Prospect Professional Care Medical Group, Inc. (2003)
Starcare Medical Group, Inc. d/b/a Gateway Medical Group (2004)
APAC Medical Group, Inc. d/b/a Gateway Medical Group (2004)
Prospect Northwest Orange County Medical Group, Inc. (2004)
Genesis Healthcare (2006)
ProMed Medical Group (2007)
Upland Medical Group (2007)

Prospect Medical Group, Inc. owns a majority interest in:
Nuestra Familia Medical Group, Inc. (1998)

Prospect Medical Group, Inc. is a joint venture partner in:
AMVI Care Medical Group (2007)