Key Personnel Home > Key Personnel About Us Key Personnel Information PRC Staff Dermatology Internal Medicine Rheumatology Get to know PRC PRC Staff Melvin A. Churchill, MD, FACR, Board Certified DIRECTOR OF CLINICAL RESEARCH, PRINCIPAL INVESTIGATOR View CV Rick C. Chatwell, MD, FACR, Board Certified CLINICAL RESEARCH INVESTIGATOR View CV Lisa M. Kastanek, RN, CCRC MANAGING PARTNER View CV