Select Medical Holdings Corporation is an operator of both specialty hospitals and outpatient rehabilitation clinics in the United States based on number of facilities. The Company operates in two business segments: specialty hospital segment and outpatient rehabilitation segment. The Company specialty hospital segment consists of hospitals designed to serve the needs of long term stay acute care patients and hospitals designed to serve patients who require intensive inpatient medical rehabilitation care. The Company outpatient rehabilitation segment consists of clinics and contract therapy locations that provide physical, occupational and speech rehabilitation services. The Company also provides medical rehabilitation services on a contract basis at nursing homes, hospitals, assisted living and senior care centers, schools and worksites. As of December 31, 2014, the Company had operations in 41 states and the District of Columbia.