Tenet Healthcare Corporation is a multinational investor-owned healthcare services company based in Dallas, Texas, United States. Through its brands, subsidiaries, joint ventures, and partnerships, including United Surgical Partners International (USPI), the company operates a number of facility types. As of December 2018, Tenet had 115,000 employees and operated 68 hospitals with approximately 20,000 licensed beds, 21 surgical hospitals, and 470 outpatient centers.Since its founding in 1967, Tenet has expanded significantly. Among other major acquisitions and formations, Tenet founded Conifer Health Solutions in 2008, MedPost Urgent Care in 2014, and in 2013 acquired Vanguard Health Systems, Inc., an investor-owned hospital company whose operations complemented Tenet's existing business. The acquisition created the third-largest investor-owned hospital company in the U.S. in terms of revenue and the third-largest in number of hospitals owned. In 2015, Tenet acquired USPI, which created the largest operator of outpatient surgery centers in the United States. In 2018, the company ranked 147th in the Fortune 500.