 DALLAS--BUSINESS WIRE--United Surgical Partners International USPI, a subsidiary of Tenet Healthcare Corporation NYSE: THC, today announced that it has entered into a definitive agreement with Compass Surgical Partners Compass to purchase its ownership and management interests in nine ambulatory surgery centers ASCs. Upon completion of the transaction, USPI will manage and jointly own the centers through partnerships with approximately 125 physicians, as well as with local health syst 