Dr. David Greenwald is currently the Director of Clinical Gastroenterology and Endoscopy at Mount Sinai Hospital in New York City. Previously, he was the Fellowship Program Director in Gastroenterology at Montefiore Medical Center/Albert Einstein College of Medicine for nearly two decades and was an Associate Division Director of the Division of Gastroenterology at Montefiore Medical Center in the Bronx, New York. He is also a Professor of Clinical Medicine at the Albert Einstein College of Medicine. He just completed a term as one of the Medical Directors of the Advanced Endoscopy Center. Dr. Greenwald graduated with a BA degree from Wesleyan University, and attended the Albert Einstein College of Medicine, where he earned an MD. He did a residency in Internal Medicine followed by a Gastroenterology Fellowship, both at Columbia Presbyterian Medical Center in New York.