Cornerstone Alliance, Inc. Physician Hospital Organization (PHO), based in Lima, OH, was established in 1995. The organization was developed by the West Central Ohio Primary Care Physicians and St. Rita’s Medical Center to ease the transition for area providers into a healthcare landscape dominated by managed care entities.
The primary service area for the Cornerstone Provider Network consists of Allen, Auglaize, Hancock, Hardin, Logan, Mercer, Paulding, Putnam, Shelby, and Van Wert Counties in West Central Ohio. There are over 500 participating providers and we continue to grow. Our provider network consists of physician, hospital and ancillary providers.