title: Pioneers no more? A number of ACOs are still weighing whether to switch to another model.
authors.forename: Melanie
authors.initials: M
authors.lastname: Evans
mesh_terms: D060866:Accountable Care Organizations; D014487:Centers for Medicare and Medicaid Services, U.S.; D017146:Models, Organizational; D009936:Organizational Innovation; D014481:United States