Internal Medicine Divisions Digestive Diseases and Nutrition Fellowship Information Fellowship Information Gastroenterology Fellowship Program A three-year training program in clinical and academic gastroenterology. Specialized training during the third year is available in advanced endoscopy, hepatology, and inflammatory bowel diseases. Hepatology Fellowship Program A one-year training program that can be conducted after completion of internal medicine residency or gastroenterology fellowship. Advanced Endoscopy Fellowship Program A one-year training program that can be conducted after completion of gastroenterology fellowship.