At New York-Presbyterian Hospital, she serves as the Director of the Adolescent Medicine Consult Service, the Medical Director of the Lang Youth Mentoring Program, and the Director and Principal Investigator for the Family PEACE Program, a Department of Justice funded Safe Start Initiative site that works with mothers and children exposed to domestic violence. Marina received her undergraduate and medical degrees at Brown University. She completed her Pediatrics Residency, Chief Residency, and Adolescent Medicine Fellowship at The Children's Hospital of Philadelphia and is completing a Master's in Clinical Epidemiology from the University of Pennsylvania.