Hughston Clinic - Ryan M. Geringer, DO provides orthopedic sports medicine care with a focus on shoulder and knee conditions. Ryan M. Geringer, DO, FAOAO is a board-certified, fellowship-trained orthopedic surgeon who completed a sports medicine fellowship at the Hughston Foundation in Columbus, following medical education at Des Moines University College of Osteopathic Medicine and orthopaedic surgery internship and residency training through Michigan State University at Mount Clemens Regional Medical Center.