HCA Healthcare is a holding company. Through its subsidiaries, partnerships and joint ventures, the company owns and operates hospitals and related health care entities. Most of the company's general, acute care hospitals provide medical and surgical services, including inpatient care, intensive care, cardiac care, diagnostic services and emergency services. The general, acute care hospitals also provide outpatient services such as outpatient surgery, laboratory, radiology, respiratory therapy, cardiology and physical therapy. The company's psychiatric hospitals provide therapeutic programs including child, adolescent and adult psychiatric care, adolescent and adult alcohol and drug abuse treatment and counseling.

Select Medical Holdings is managed through four business segments: critical illness recovery hospital, which consists of hospitals designed to serve the needs of patients recovering from critical illnesses; rehabilitation hospital, which consists of hospitals designed to serve patients that require intensive physical rehabilitation care; outpatient rehabilitation, which consists of clinics that provide physical, occupational, and speech rehabilitation services; and the company's subsidiary, Concentra Inc. segment, which consists of occupational health centers that provide workers' compensation injury care, physical therapy, and consumer health services and onsite clinics.

Tenet Healthcare is a healthcare services company. Through its subsidiaries, partnerships and joint ventures, including USPI Holding Company, Inc., the company operates hospitals, surgical hospitals and outpatient centers. In addition, the company's Conifer Holdings, Inc. (Conifer) subsidiary provides healthcare business process services in the areas of hospital and physician revenue cycle management and care solutions to healthcare systems, as well as individual hospitals, physician practices, self-insured organizations, health plans and other entities. The company has three reportable segments: Hospital Operations and other; Ambulatory Care; and Conifer.

Universal Health Services owns and operates, through its subsidiaries, acute care hospitals and outpatient facilities and behavioral health care facilities. The company owns and/or operates inpatient facilities and outpatient and other facilities located in several states including, Washington, D.C., the United Kingdom, and Puerto Rico. Services provided by the company's hospitals include general and specialty surgery, internal medicine, obstetrics, emergency room care, radiology, oncology, diagnostic care, coronary care, pediatric services, pharmacy services and/or behavioral health services. The company's reportable operating segments consist of acute care hospital services and behavioral health care services.