Robert Rapaport, MD, is professor of pediatrics and chief of the Division of Pediatric Endocrinology and Diabetes at the Icahn School of Medicine at Mount Sinai. He holds the Emma Elizabeth Sullivan Professor of Pediatric Endocrinology and Diabetes Chair at the Icahn School of Medicine at Mount Sinai. Dr Rapaport is a long-time member of the Pediatric Endocrine Society, the Endocrine Society, and the Growth Hormone Research Society and has served in various capacities in these organizations. He is an elected member of the American Pediatric Society. Dr Rapaport is also active in both the American Diabetes Association and the Juvenile Diabetes Research Foundation. He has served on the editorial boards of the Journal of Clinical Endocrinology and Metabolism, the Journal of Pediatric Endocrinology & Metabolism, Pediatric Endocrinology Reviews, and other publications. Currently, he is a senior editor of Endocrine Connections and the Journal of Diabetes, among others. He has published numerous peer-reviewed publications, chapters, and reviews and more recently served as editor of several editions of Endocrinology and Metabolism Clinics of North America dedicated to Pediatric endocrinology.