Dr. Arnold is an attending physician in the Pediatric Emergency Department at Yale-New Haven Children’s Hospital, where she oversees medical student and resident education and serves as course director for the Department of Pediatrics. A former Peace Corps volunteer, Dr. Arnold is the Associate Director of the Yale Program in International Child Health and a longstanding member of the Down’s Fellowship selection committee at Yale University. She established and directs the Yale Pediatric Global Health Track, for which she also oversees curriculum and site development.