Dr. Wiedemer is a medical graduate for Ohio State University. He completed his Internship, Residency and Fellowship in Gastroenterology at Rush-Presbyterian-St. Luke’s Medical Center in Chicago, Illinois. Dr. Wiedemer has been a Clinical Instructor and Assistant Professor of Medicine. He has been involved in various research projects related to Gastroenterology. He is board certified in both Internal Medicine and Gastroenterology. Dr. Wiedemer has been in practice in the Lansing area since 1978.