Address 55 W. 17th Street, STE 110 New York, NY 10011 Phone 212-843-9615 Description Looking for a best in class colonoscopy doctor in NYC? A colonoscopy is an endoscopic examination performed by the NYC gastroenterologist, Dr. Shawn Khodadadian in Midtown Manhattan and Upper East Side, of the large bowel and is considered the gold standard of bowel cancer screening methods. Dr. Khodadadian guides a colonoscope (a long, thin, flexible tube containing a tiny video camera) from the anus to the end of the colon (cecum) and into the distal part of the small bowel (the terminal ileum). During your colonoscopy images from the camera are shown in real-time on a monitor, allowing the doctor to carefully examine the bowel. Biopsies and treatment can be given during this procedure, which usually takes about 30 minutes.