More than 25,000 people are in need of care in the U.S. and around the world. They are committed to the world's largest health care network. The network is based in Chicago, Illinois, with more than 3 million people a year. It is the largest health network in the world and has more than 1,000 employees. It specializes in healthcare, accountable care organization, hospitals, immediate care, outpatient care, cardiovascular care, neurology, oncology, pediatrics, primary care, orthopedics.