- Saint Louis University School of Medicine, St. Louis, Missouri – MD
- University of Wisconsin Hospital and Clinics – Residency in Internal Medicine
- William S. Middleton Memorial Veterans Administration Hospital, Madison, Wisconsin – Primary Care Chief Resident
- Medical College of Wisconsin, Milwaukee, Wisconsin –Fellowship in Gastroenterology and Hepatology
Dr. John Williams is a faculty member of the Division of Gastroenterology and Hepatology within the Department of Medicine. He is a member of the American Gastroenterological Association, the American Society for Gastrointestinal Endoscopy, and the American Medical Association.
Dr. Williams’ clinical interests include general gastroenterology and endoscopic procedures, including celiac disease, inflammatory bowel disease, capsule endoscopy, colonoscopy, polypectomy, upper gastrointestinal endoscopy, esophageal dilation and sigmoidoscopy.