Tenet rival HCA Holdings Inc, the country's largest hospital chain, currently operates 113 freestanding surgery centers.

HCA operates about 162 hospitals with about 41,000 beds, and 106 freestanding surgery centers across 20 states in the United States and in England.

HCA said it operates 162 hospitals with about 41,000 beds, and 106 freestanding surgery centers across 20 states in the United States and in England.