Leadership Team

Robert Bessler, MD

Robert Bessler, MD

Chief Executive Officer and Founder
John Birkmeyer, MD

John Birkmeyer, MD

President, Medical Group
Gregory Johnson, MD, SFHM 1

Gregory Johnson, MD, SFHM

Chief Executive Officer, Hospital Medicine and Chief Diversity Officer
Catherine Abshire, BSN, RN

Catherine Abshire, RN

Chief Nursing Officer
Nathan Ruch, MD, FACEP

Nathan Ruch, MD, FACEP

Chief Executive Officer, Emergency Medicine and Chief Integration Officer
Stephen Matchett, MD

Stephen Matchett, MD

Chief Executive Officer, Critical Care

David Leachman, MD, FASA, FACHE

Chief Executive Officer, Anesthesia

Troy Thibodeaux

Chief Operating Officer
Jess Parks

Jess Parks

Chief Financial Officer
Annie Fowler 1

Annie Fowler

Chief People Officer

Daniel J. Weissburg, JD, CHC

Chief Compliance and Privacy Officer
April Burke, PA-C

April Burke, PA-C

Vice President, Advanced Practice Providers
Brian Carpenter, MD, SFHM

Brian Carpenter, MD, SFHM

Chief Medical Officer, Telemedicine
Andi Damron, CRNA, MSN, BSN

Andi Damron, MS, BSN, CRNA

Chief Anesthetist, Anesthesia
John Dickey, MD

John Dickey, MD

Chief Medical Officer, Value-Based Care and Long-Term Care Management ACO

Lauren Jones, MD

Chief Medical Officer, Anesthesia
Sergio Zanotti, MD, FCCM

Sergio Zanotti, MD, FCCM

Chief Medical Officer, Critical Care
Gary Zimmer, MD

Gary Zimmer, MD

Chief Medical Officer, Emergency Medicine
Robert Zipper, MD, MMM, SFHM

Rob Zipper, MD, MMM, SFHM

Chief Medical Officer, Physician Advisory and Health Policy