Select Medical is one of the largest operators of critical illness recovery hospitals (previously referred to as long term acute care hospitals), rehabilitation hospitals (previously referred to as inpatient rehabilitation facilities), outpatient rehabilitation clinics, and occupational health centers in the United States based on the number of facilities. Select Medical operated 100 critical illness recovery hospitals in 28 states, 28 rehabilitation hospitals in 12 states, and 1,695 outpatient rehabilitation clinics in 37 states and the District of Columbia.