Dr. Brian J. Gillis is a colon and rectal surgeon in Waterville, Maine and is affiliated with multiple hospitals in the area, including Inland Hospital and MaineGeneral Medical Center. He received his medical degree from University of New England College of Osteopathic Medicine and has been in practice for more than 20 years. Dr. Brian J. Gillis has expertise in treating colonoscopy, among other conditions - see all areas of expertise. Dr. Brian J. Gillis accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Brian J. Gillis is highly recommended by patients.