SEM Select Medical Holdings Corporation is an operator of both specialty hospitals and outpatient rehabilitation clinics in the United States. As of December 31, 2009, the Company operated 89 long-term acute care hospitals and six inpatient rehabilitation facilities in 25 states, and 961 outpatient rehabilitation clinics in 37 states and the District of Columbia. It also provides medical rehabilitation services on a contract basis at nursing homes, hospitals, assisted living and senior care centers, schools and worksites. The Company operates in two business segments: specialty hospital and outpatient rehabilitation segments. Its specialty hospital segment consists of hospitals designed to serve the needs of long-term stay acute patients and hospitals designed to serve patients who require intensive inpatient medical rehabilitation care. Its outpatient rehabilitation business consists of clinics and contract services that provide physical, occupational and speech rehabilitation services.