Banner – UMC, UA Department of Surgery welcome new surgeons
Appointments can be scheduled now

Contact: Katie Riley

TUCSON, Ariz. (Feb. 2, 2018) -- Banner – University Medical Center and the University of Arizona Department of Surgery are pleased to welcome three new surgeons to Tucson.

Marion Henry, MD, MPH, joined the faculty as an associate professor in the UA Departments of Surgery and Pediatrics in November. She came to Tucson from Naval Medical Center San Diego, where she was a commander in the Medical Corps.

Dr. Henry earned her medical degree from Stanford University School of Medicine in Palo Alto, Calif., and completed her general surgical residency at Stanford Hospital and Clinics and at Yale University, where she also earned a master’s degree in public health and a research fellowship in pediatric surgery. Dr. Henry completed further fellowship training in pediatric surgery at the Children’s National Medical Center in Washington, D.C., and is board certified in general and pediatric surgeries.

Additionally, Dr. Henry is chair of the Health Policy and Advocacy Committee for the American Pediatric Surgical Association. She’s also a member of other associations and organizations including:

  • The Association of Women Surgeons

  • The Association of Surgical Education

  • The Society of Gastrointestinal and Endoscopic Surgeons

  • A fellow of the American College of Surgeons

  • The American Academy of Pediatrics

  • The American Pediatric Surgical Association


Dr. Henry specializes in neonatal, pediatric and thoracic surgery. She has a particular interest in the care of newborns with congenital anomalies and in pediatric surgical oncology. Her research interests include clinical outcomes, family and patient-centered outcomes, and systems-based care improvements.

To schedule  an appointment to see Dr. Henry, please call 520-694-KIDS (5437).

David Stewart, MD, is an associate professor and the new section chief of colon and rectal surgery in the UA Department of Surgery.

Dr. Stewart  received his medical degree from Baylor College of Medicine in Houston, completed his surgery residency at the Santa Barbara Cottage Hospital near Santa Barbara, Calif., and then underwent fellowship training in colon and rectal surgery at the Washington University School of Medicine in St. Louis.

His specializes in the surgical treatment of colorectal disease, with a particular emphasis on recurrent rectal cancer and inflammatory bowel disease. He also maintains a research laboratory focusing on C. difficile infection and treatments, with funding support from the American Society of Colon and Rectal Surgeons and the National Institutes of Health.

To schedule an appointment with Dr. Stewart, please call 520-694-2873.

Craig Weinkauf, MD, PhD, an assistant professor in the Division of Vascular Surgery at the UA Department of Surgery, joined the faculty in November.

He is a Tucson native who earned his combined medical degree and doctorate in immunology from Tufts University in Boston. Dr. Weinkauf completed his residency in vascular surgery at the University of Arizona College of Medicine – Tucson.

He treats patients with vascular disease, such as aortic aneurysms, carotid artery stenosis, peripheral arterial disease and venous and lymphatic disease.

Dr. Weinkauf’s research interests include identifying molecular markers indicative of stroke risk associated carotid artery disease and the use of advanced imaging methods to diagnose and better understand pathology in the brain, abdomen, and legs.

To schedule an appointment with Dr. Weinkauf, please call 520-694-8888.

About Banner – University Medical Center Tucson and South

Banner – University Medical Center Tucson, nationally ranked as a best hospital by U.S. News and World Report, and Banner – University Medical Center South, are part of Banner – University Medicine, a premier academic medical network. These institutions are academic medical centers for the University of Arizona College of Medicine – Tucson. Included on the two campuses are Diamond Children's Medical Center and many specialty clinics. The two academic medical centers are part of Arizona-based Banner Health, one of the largest nonprofit health care systems in the country. Banner Health is in six states: Arizona, California, Colorado, Nebraska, Nevada and Wyoming. For more information, visit or