Select Medical Holdings Corporation, through its subsidiary, Select Medical Corporation, operates specialty hospitals and outpatient rehabilitation clinics in the United States. It operates in two segments, Specialty Hospitals and Outpatient Rehabilitation. The Specialty Hospitals segment provides long term acute care hospital services and inpatient acute rehabilitative hospital care. This segment offers various medical services for the treatment of respiratory failure, neuromuscular disorders, traumatic brain and spinal cord injuries, strokes, non-healing wounds, cardiac disorders, renal disorders, and cancer. The Outpatient Rehabilitation segment operates clinics that provides physical, occupational, and speech rehabilitation services. This segment also offers medical rehabilitative services to residents and patients of nursing homes, hospitals, schools, assisted living and senior care centers, and worksites. In addition, this segment provides specialized programs, such as functional programs for work related injuries, hand therapy, and athletic training services; and services that are designed to prevent short term disabilities from becoming chronic conditions. As of December 31, 2014, it operated 113 long term acute care hospitals and 16 acute medical rehabilitation hospitals in 28 states; and 1,023 outpatient rehabilitation clinics in 31 states and the District of Columbia. Select Medical Holdings Corporation was founded in 1996 and is headquartered in Mechanicsburg, Pennsylvania.