HCA Midwest Health is Kansas City's largest network and recognized leader in healthcare, consisting of doctors, hospitals, emergency rooms (ERs), urgent care clinics, outpatient centers, physician practices, and surgery centers. The Kansas City region is a two-state region home to more than 2.5 million people as well as home to corporate headquarters giants including Cerner, AMC, Garmin, Hallmark and H&R Block, among many others.