Dr. Mullner is a primary care physician, fellowship trained in sports medicine. He is a former assistant team physician for the New York Jets and Seton Hall University. He played college soccer at Presbyterian College in South Carolina. Dr. Mullner's scope of practice includes evaluation and treatment of upper and lower extremity injuries, tendinopathies and muscle injuries, injection therapy, concussion, sports-related respiratory issues and pre-participation physicals. Dr. Mullner's special interests include sports and athletic performance, non-surgical management of orthopedic injuries, and concussion. Dr. Mullner currently serves as a team physician for D.C. United.