A native of Knoxville, Tennessee, Ergen received his bachelor’s degree in history from the University of Virginia and earned his Doctor of Medicine degree at the University of Tennessee College of Medicine. He completed his internship and residency in internal medicine at Vanderbilt University Medical Center and his fellowship in gastroenterology and hepatology at the University of Alabama at Birmingham.

Ergen has researched quality improvement in colonoscopy and video capsule endoscopy. He is trained in the broad specialty of gastroenterology and hepatology with a focus on inflammatory bowel disease and colon cancer prevention. He is board certified in internal medicine by the American Board of Internal Medicine (ABIM) and board eligible in gastroenterology.

Ergen is a member of the American College of Gastroenterology (ACG), American Society for Gastrointestinal Endoscopy (ASGE) and American Gastroenterological Association (AGA).

Ergen is married to Dr. Elizabeth Ergen, and the couple reside in Knoxville with their two children. His hobbies include running, cycling, hiking, movies and UT sports.