Dr. Sumner joined the Division of Gastroenterology, Hepatology and Nutrition and the Faculty of the School of Medicine at Vanderbilt University Medical Center in 2008.
Dr. Sumner received his undergraduate degree from the University of Georgia, and he earned his medical degree from the Medical College of Georgia.
Dr. Sumner completed an internship, residency, and chief residency in internal medicine at Vanderbilt University Medical Center. This was followed by fellowship training in gastroenterology, also at Vanderbilt University Medical Center. He is certified by the American Board of Internal Medicine in both Gastroenterology and Internal Medicine.
Dr. Sumner interests include general gastroenterology and advanced endoscopy with endoscopic ultrasound, video capsule enteroscopy, and deep enteroscopy.