Dr. Gremmels has an undergraduate degree from Washington University in St. Louis, Missouri. He received his M.D. from the University of Illinois in Chicago, Illinois and completed his residency in Diagnostic Radiology at Loma Linda University Medical Center in Loma Linda, California. Dr. Gremmels went on to complete his fellowship in Body Imaging at Beth Israel Deaconess Medical Center from Harvard Medical School in Boston. His special interest is in CTA and Body MRI with an expertise in prostate MRI.