Vanguard Health Systems was an operator of hospitals and other medical facilities in five U.S. states: Arizona, Illinois, Massachusetts, Michigan, and Texas. The company's headquarters were located in Nashville, Tennessee. Vanguard owned twenty-six hospitals, including the ten Detroit Medical Center hospitals in Detroit, Michigan, five in San Antonio, Texas, four in the Chicago area, four in the Phoenix, Arizona area, and controlled an additional three hospitals through joint ventures, for a total of 6,201 licensed beds. - Source: Wikipedia
