Dr. Cohen is Professor of Medicine (Neurology) in the Cleveland Clinic Lerner College of Medicine. He received a BA from Connecticut College in 1976 and MD from the University of Chicago School of Medicine in 1980. He completed a Neurology Residency in 1984 then a Post-doctoral Research Fellowship in Neuroimmunology in 1987, both at the University of Pennsylvania. Dr. Cohen has worked at the Mellen MS Center at the Cleveland Clinic since 1994 and was Director 2014-2017. He currently is Director of the Experimental Therapeutics Program, the Clinical Neuroimmunology Fellowship, and the MS Academic Coordinating Center. Dr. Cohen has published extensively on clinical, immunologic, and imaging aspects of MS. He has had a leadership role in a large number of clinical trials of potential therapies for MS, translational studies, studies to validate outcome measures, and observational studies.