Dr. Stewart holds the Jocelyn and Joe Straus Endowed Chair in Trauma Research and is the chief of the Division of Trauma & Emergency Surgery in the Department of Surgery at the University of Texas Health Science Center at San Antonio. On October 6, 2008 he was named interim chair of the Department of Surgery. He received his medical degree and residency training at the same institution and completed a Trauma & Critical Care Fellowship at the University of Tennessee-Memphis. Dr. Stewart is the Region VI chief of the American College of Surgeons Committee on Trauma. He is the board chair of the South Texas Regional Advisory Council for Trauma (STRAC), and the immediate past chairman of the National Trauma Institute (NTI). He serves on the Texas Governor's EMS and Trauma Advisory Council (GETAC), and is the chair of the GETAC Trauma Systems Committee.