Paul J. DeMarco, M.D. is a Board-Certified Rheumatologist, a Fellow of the American College of Physicians, a Fellow of the American College of Rheumatology and a member of the American Institute of Ultrasound in Medicine. Dr. DeMarco served as Medical Director for the Clinical Trials Department at the Washington Hospital Center for many years and remains involved in research. He has published and lectured in most aspects of rheumatology but has particular interest in connective tissue diseases in adults and children. He is an Associate Clinical Professor of Medicine at Georgetown University School of Medicine, teaching medical students and rheumatology fellows. He is among the first physicians in the country to achieve certification from the American College of Rheumatology in Rheumatologic Musculoskeletal Ultrasonography (RhMSUS).