HCA Holdings, Inc. is a holding company. The Company, through its subsidiaries, owns and operates hospitals and related healthcare entities. As of December 31, 2016, the Company operated in two geographically organized groups, including the National and American Groups. As of December 31, 2016, the National Group included 84 hospitals, which were located in Alaska, California, Florida, southern Georgia, Idaho, Indiana, northern Kentucky, Nevada, New Hampshire, South Carolina, Utah and Virginia. As of December 31, 2016, the American Group included 80 hospitals, which were located in Colorado, northern Georgia, Kansas, southern Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, Tennessee and Texas. As of December 31, 2016, the Company operated six hospitals in England. The Company owns, manages or operates hospitals, freestanding surgery centers and freestanding emergency care facilities, urgent care facilities, walk-in clinics, and diagnostic and imaging centers, among others.