title: Medicare shapes the nation's health care system.
authors.affiliation: AHA Office of Health Finance and Data Analysis.
authors.forename: H
authors.initials: H
authors.lastname: Bachofer
mesh_terms: D000553:Ambulatory Care / Q000191:economics; D003695:Delivery of Health Care / Q000639:trends*; D006278:Medicare; D011366:Professional Review Organizations; D011445:Prospective Payment System; D014481:United States