Dr. Miechelle L. O'Brien is a gastroenterologist in Danbury, Connecticut and is affiliated with Danbury Hospital and Healthsouth Surgery Center of Danbury. She received her medical degree from New York Medical College and has been in practice for more than 20 years. Dr. Miechelle L. O'Brien has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Miechelle L. O'Brien accepts Medicare, Aetna, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted.