Dr. Grunberger is Chairman of the Grunberger Diabetes Institute (GDI) in Bloomfield Hills, Michigan. Dr. Grunberger serves as a Clinical Professor of Internal Medicine at Wayne State University School of Medicine in Detroit, Michigan, and Professor of Internal Medicine at Oakland University William Beaumont School of Medicine in Auburn Hills, Michigan. A Fellow of the American College of Physicians and American College of Endocrinology, Dr. Grunberger has authored more than 150 scientific articles in peer-reviewed journals and served as an investigator of more than 100 clinical research studies and trials. He is a Past President of the American Association of Clinical Endocrinologists (AACE) and served on the AACE National Board of Directors from 2006 to 2012. In addition, he is the Past President of the Michigan Chapter of the AACE.