HCA Healthcare is an American for-profit operator of healthcare facilities that was founded in 1968. It owns and operates 186 hospitals and approximately 2,000 sites of care, including surgery centers, freestanding emergency rooms, urgent care centers and physician clinics in 21 states and the United Kingdom.

Their revenue was 51.336 billion and net income was 3.5 billion. They have about 2370 subsidiaries https://www.sec.gov/Archives/edgar/data/841985/000119312507168470/dex211.htm

They have recently come under fire over their dispute with nursing unions.
https://medcitynews.com/2020/06/hca-leadership-nurses-union-clash-over-cuts/