Dr. Greenwald did his residency training in Physical Medicine and Rehabilitation at Kessler Institute/ NJ Medical School. He did his fellowship training in Brain Injury Medicine at Virginia Commonwealth University. He is currently the Medical Director of Center for Brain Injuries and the Associate Medical Director of JFK Johnson Rehabilitation Institute. He is a Clinical Associate Professor in the Department of Physical Medicine and Rehabilitation at Rutgers Robert Wood Johnson Medical School. He is a Clinical Associate Professor in the Department of Physical Medicine and Rehabilitation at Hackensack-Meridian School of Medicine at Seton Hall University. He is the Director for the Brain Injury Medicine Fellowship at JFK Johnson Rehabilitation Institute. He is the Medical Director for the JFK Johnson Traumatic Brain Injury Model Systems of care grant funded by the National Institute on Disability, Independent Living, and Rehabilitation Research. Dr. Greenwald has been the recipient of multiple awards for his clinical work, research work, and teaching. Dr. Greenwald has published multiple articles and book chapters in the areas of brain injury rehabilitation. Currently he is involved in several research studies to improve the care of brain injury survivors.