Dr. Jonathan J. Fillmore is an endocrinologist in Middlebury, Connecticut and is affiliated with multiple hospitals in the area, including St. Mary's Hospital-Waterbury and Waterbury Hospital. He received his medical degree from Weill Cornell Medicine and has been in practice for more than 20 years. Dr. Jonathan J. Fillmore has expertise in treating chronic diabetes, among other conditions - see all areas of expertise. Dr. Jonathan J. Fillmore accepts Medicare, Aetna, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Jonathan J. Fillmore is highly recommended by patients.