Texas Health Resources (THR) is one of the largest faith-based, nonprofit health care delivery systems in the United States and the largest in North Texas in terms of patients served. The system's primary service area consists of 16 counties in north central Texas, home to more than 6.2 million people. Texas Health leaders formed the system in 1997 with the assets of Fort Worth-based Harris Methodist Health System and Dallas-based Presbyterian Healthcare Resources. Later that year, Arlington Memorial Hospital joined the Texas Health system. Texas Health has 13 acute-care hospitals and one long-term care hospital that total 3,355 licensed hospital beds, employs more than 18,000 people, and counts more than 3,600 physicians with active staff privileges at its hospitals.  Texas Health is also a corporate member or partner in six additional hospitals and surgery centers.