Cornerstone Healthcare Group, based in Dallas, Texas, was founded in 1990 and provides three service lines in seven states: e ... ighteen Specialty Hospitals, eight Senior Living, and one Behavioral Health Hospital. We pride ourselves on our quality of care, responsive service, and commitment to excellence. We treat each employee, patient and resident like we would a member of our own family, and measure our success by the direct impact we have on improving the quality of life for our employees, patients and residents. read more