Endorsed by the MMA as its preferred medical professional liability insurer since 1995, Medical Mutual Insurance Company of Maine provides medical professional liability insurance to physicians, hospitals, nursing homes and allied health facilities in Maine, New Hampshire, Vermont and Massachusetts. The Company underwrites all specialties, a long-held principle aimed at providing stability for the medical communities the Company serves and to foster access to comprehensive care.  Today, Medical Mutual insures 38 hospitals and nearly 3,900 physicians and enjoys an A.M. Best A, or Excellent, rating.