Marc is a pediatrician in full-time practice for more than twenty years in Brewster, New York. He received his Medical Degree from The Case Western Reserve University School of Medicine in 1991 and completed his residency training at The Mount Sinai Medical Center in New York City. He has been a Clinical Instructor of Pediatrics and Pediatric Emergency Medicine at the Mount Sinai Hospital since 1994, an Assistant Professor of Pediatrics at the New York Medical College since 1998 and an Assistant Professor of Pediatrics at the Mount Sinai Hospital since 2016. Marc has served as a member of the CareMount board of directors since 2004 and as a vice president of CareMount since 2014.