HCA Holdings, Inc., through its subsidiaries, provides health care services in the United States. The company owns, manages, or operates hospitals, freestanding surgery centers, diagnostic and imaging centers, radiation and oncology therapy centers, rehabilitation and physical therapy centers, and various other facilities. Its general acute care hospitals provide medical and surgical services, including inpatient care, intensive care, cardiac care, diagnostic services, and emergency services, as well as outpatient services comprising outpatient surgery, laboratory, radiology, respiratory therapy, cardiology, and physical therapy; and psychiatric hospitals offer therapeutic programs, such as child, adolescent, and adult psychiatric care, as well as adult and adolescent alcohol and drug abuse treatment and counseling. The company’s general, acute care hospitals provide a range of services to accommodate such medical specialties as internal medicine, general surgery, cardiology, oncology, neurosurgery, orthopedics, and obstetrics. As of June 30, 2012, it operated 163 hospitals, including 157 general acute care hospitals with 41,817 licensed beds, as well as 110 freestanding surgery centers in 20 states and England. HCA Holdings, Inc. was founded in 1968 and is headquartered in Nashville, Tennessee.