title: ACOs are touching more patients than expected. While much work remains to be done, ACOs have become a substantial part of healthcare in a remarkably short period of time.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Perna
mesh_terms: D060866:Accountable Care Organizations / Q000706:statistics & numerical data*; D006801:Humans; D058991:Patient Protection and Affordable Care Act; D014481:United States