Elizabeth Wells, MD

Marc DiFazio, M.D., is the Vice President ofambulatory Services at Children’s National Hospital. He completed his pediatric and neurology training at Walter Reed Army Medical Center, and went on to become the Chief of Child Neurology at Walter Reed, where he served on active duty until 2005 before transitioning to private practice in Rockville, MD.

Ian Leibowitz, MD is Division Chief, Gastroenterology, Hepatology and Nutrition Services at Children's National Hospital. He is an elected Councilor to the Executive Committee of the Northamerican Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASOHAN) and is a member of the Strategic Council and Physicians Leadership Group with ImprovedCareNow, a national collaborative that has created a community of clinicians and researchers that measures outcomes and develops best clinical standards.

Jay N. Greenberg, M.D., is a hematologist and oncologist at Children's National Hospital. He is Clinical Professor of Pediatrics at the George Washington University School of Medicine and Health Sciences. He also served as a principal investigator for Children’s Oncology Group, Pediatric Oncology Group and Children's Cancer Study Group for more than 25 years.