John R. Marler, MD (Bethesda, Maryland), a board-certified neurologist and stroke researcher, is Associate Director for Clinical Trials at the National Institute of Neurological Disorders and Stroke. He is a fellow of the American Stroke Association and recipient of the association’s Feinberg Award for Excellence in Clinical Research. He has been administering clinical research in stroke since 1984. He completed his neurology residency training at Mayo Clinic in Rochester, Minnesota and graduated from West Virginia University Medical School in Morgantown, West Virginia.