HCA Holdings, Inc. (HCA) is a holding company whose affiliates owns and operates hospitals and related health care entities. HCA is a health care services company in the United States. At December 31, 2013, it operated approximately 165 hospitals, comprised of approximately 159 general, acute care hospitals; five psychiatric hospitals and one rehabilitation hospital. In addition, it operated approximately 115 freestanding surgery centers. Its operations are structured into three geographically organized groups: the National, Southwest and Central Groups. The Company’s general, acute care hospitals typically provide a range of services to accommodate such medical specialties as internal medicine, general surgery, cardiology, oncology, neurosurgery, orthopedics and obstetrics, as well as diagnostic and emergency services.