Dr. Ali Andre Mencin, a general pediatric gastroenterologist, is the Chief of the Division of Pediatric Gastroenterology, Hepatology and Nutrition at NewYork-Presbyterian & Columbia University Irving Medical Center as well as the Director of the Pediatric Fatty Liver Clinic and Pediatric Endoscopy at Columbia. He is an Associate Professor of Pediatrics at Columbia, and is recognized as a Castle Connolly Top Doctor and a New York Super Doctor. Dr. Mencin sees children with a range of digestive diseases including fatty liver disease, inflammatory bowel disease, eosinophilic esophagitis, reflux, abdominal pain, constipation, cyclic vomiting syndrome, feeding difficulties, and polyposis syndromes.