Dr. Richard Shellenberger graduated from Michigan State University, College of Osteopathic Medicine in 1989. He completed a transitional internship at Flint Osteopathic Hospital followed by an Internal Medicine residency at St. Joseph Mercy Hospital, where he was Chief Medical Resident in 1993-94. Dr. Shellenberger has been a faculty in the Trinity Health Ann Arbor Hospital Internal Medicine Residency Program since 1994 and has been the Associate program director for the past 16 years. In 2023 he was awarded Mastership in the American College of Physicians. His research interests include evidence based physical diagnosis, malignant melanoma, skin cancer screening, and cancer epidemiology.