Dr. Oleg Katcher, is board certified Gastroenterologist in Brooklyn, NY. He has more than 16 years of experience in treating patients with various gastrointestinal ailments and has a strong commitment to excellence. As a longtime resident of Brooklyn himself, Dr. Katcher enjoys forming and maintaining deep, meaningful relationships with patients and members of his community. Dr. Katcher underwent rigorous training at some of the best medical centers in the United States. After finishing medical school at the top of his class at Mount Sinai, Dr. Katcher completed his internal medicine residency training at the Weill Cornell Medical center, and his fellowship in gastroenterology at the Memorial Sloan Kettering Cancer Center..

Throughout his training, Dr. Katcher received numerous academic and research awards, and has authored numerous publications. Dr. Katcher has worked with the best experts in the field of gastroenterology and endoscopy and has particular expertise and interest in screening for gastrointestinal cancers and treating such gastroenterological disorders as hemorrhoids, IBS, GERD, gastroparesis, constipation, incontinence and liver disease. Dr. Katcher is a native Russian speaker, and is fluent in Spanish as well. He is currently affiliated with the New York Presbyterian Brooklyn Methodist Hospital.