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  • Pediatric Gastroenterology, Nutrition, and Liver Diseases

  • Neal LeLeiko, MD, PhD

    • Director of pediatric gastroenterology, nutrition, and liver diseases

    Background Information


    Neal LeLeiko, MD, PhD, specializes in caring for children with Inflammatory Bowel Disease and intestinal failure. He has been a leader in the field of pediatric gastroenterology, nutrition, liver transplantation and small bowel transplantation.

    Before coming to Brown Medical School and Hasbro Children's Hospital he created and directed the pediatric gastroenterology program at New York's Mount Sinai Medical Center. LeLeiko is a graduate of Brooklyn College and New York Medical College. Following military service in the United States Air Force, he received a PhD in nutritional biochemistry and metabolism from MIT and completed a fellowship in pediatric gastroenterology at Boston Children's Hospital (Harvard Medical School).

    His academic career has focused on the important role of nutrition in childhood disease and especially diseases of the gastrointestinal tract and liver. He has over 120 academic and scholarly publications. He currently serves on the editorial board of the largest circulating pediatric journal in the world (Pediatrics) where he is the editor for gastroenterology and nutrition. He also serves as a contributing editor to AAP Grand Rounds, the American Academy of Pediatrics monthly review of the latest medical advances. He is a member of many prestigious societies including the Society for Pediatric Research and American Pediatric Society.

    LeLeiko is board-certified in general pediatrics and pediatric gastroenterology.

    Research Interests

    LeLeiko's research interests focus on the role of nutrition in chronic illness and the ability of the intestine to repair and maintain itself. His current research protocols include a prospective study of the natural history of children with Inflammatory Bowel Disease (IBD), and a study to predict the response of children admitted to the hospital with severe ulcerative colitis.

    His research has been published in reknowned basic-science research journals as well as in journals focusing on clinical research. He has many research honors and has been director of the National Institute of Health General Clinical Research Center in New York (Mount Sinai Medical Center).


    • From 1991 through 2002, LeLeiko was regularly cited as among the "Best Doctors" in New York
    • Since 1994 to the present, he has been regularly cited as one of the "Best Doctors" in America
    • Elected to the American Pediatric Society (1997)
    • Elected to the Society of Pediatric Research (1991)
    • Elected to the Harvey Society (1991)
    • Solomon Silver Award in Clinical Medicine (1980)
    • Cor et Manus (Medical School Honor Society) (1971)

    Selected Publications

    LeLeiko has published over 120 articles in scholarly journals and textbooks. For a comprehensive listing of publications, please refer to his curriculum vitae.