Johns Hopkins Undergraduate School MS Biology 1976 Johns Hopkins Medical School MD 1980 Pediatric Residency UCLA 1980-3 Pediatric Gastroenterology Fellowship 1983-6 Assistant Professor of Pediatrics, Gastroenterology- University of North Carolina 1986 Associate Professor of Pediatrics 1991 Professor of Pediatrics 1997 Ochsner Clinic foundation - Head of Pediatric Gastro 2002-6 University of Texas Medical School at Houston, Head of Pediatric Gastro and Fellowship Director 2006-now