Professor and chair
President’s Council Chair for Excellence in Surgery Department of Cardiothoracic Surgery
Director, University Health System/UT Health San Antonio Heart and Vascular Institute
An integral member of UT Health San Antonio for more than 25 years, Dr. Calhoon attended the University of Texas at Austin and graduated from Baylor College of Medicine in 1981. He was selected as chief resident at the Harvard Medical School Boston Children’s Hospital in pediatric cardiac surgery. Dr. Calhoon then joined the faculty at UT Health San Antonio in 1994. In 2010, Dr. Calhoon was named Founding Chairman of the Department of Cardiothoracic Surgery. Areas of clinical expertise include congenital heart surgery, adult cardiac surgery, and pulmonary transplantation.
Honors include a variety of teaching awards from the institution and department including being awarded the first ever President’s Council Chair for Excellence in Surgery in 2003. He is author of more than 100 peer reviewed journal articles and 20 book chapters. Dr. Calhoon is council chair and immediate past president of the Southern Thoracic Surgical Association and president of the Thoracic Surgery Foundation. He is a past board member and past officer of the Joint Council in Thoracic Surgical Education. He is a past president of the American Board of Thoracic Surgery and a former board member of the Society of Thoracic Surgeons. He is a member of the American Association of Thoracic Surgery and Texas Surgical Society. Active in a number of civic areas, Dr. Calhoon has served as chairman of the local American Heart Association Board.
Aaron M. Abarbanell, MD, is an associate professor and Chief of Pediatric Cardiac Surgery at the Pediatric Heart Center. He earned his medical degree from the University of Michigan Medical School, then completed his general surgery residency at Indiana University School of Medicine. He served for six years in the U.S. Navy and is board-certified in general surgery, thoracic surgery, and congenital cardiac surgery.