Lawrence M. Riddles, MD, MS, MBA, is Senior Vice President and Regional Chief Medical Officer of Lehigh Valley Health Network, a position he has held since October 2016. He also is a member of the Lehigh Valley Hospital–Schuylkill Board of Directors. 

Dr. Riddles previously served as Executive Vice President and Chief Medical Officer of St. Dominics-Jackson Memorial Hospital, Jackson, Mississippi. Prior to that, Dr. Riddles served 35 years in the United States Air Force, retiring at the rank of Colonel. He has held multiple assignments in numerous locations around the world.

Dr. Riddles has held board positions with the American College of Physician Executives, most recently as President and Board Chair. He is a Fellow of the American College of Surgery and a Fellow of the American College of Physician Executives (FACPE). Dr. Riddles also is a Certified Physician Executive (CPE).