Initially formed in 1995, Iowa Health System is the state's first and largest integrated health-care system, serving one of almost every three patients in Iowa. Iowa Health System includes affiliate hospitals in seven large Iowa communities and Rock Island, Ill., a system of hospitals in 14 rural communities, and group practices of physicians and clinics in 71 communities in Iowa, Illinois, and Nebraska. Iowa Health System has one of the largest workforces in the state, with more than 19,000 employees and annual revenues of almost $2 billion. Each year, through more than 1.8 million patient visits, its hospitals and clinics cover virtually every medical specialty and provide a full range of care. Iowa Health System is the seventh largest non-Catholic health system in America.