title: The ACO Experiment in Infancy--Looking Back and Looking Forward.
authors.affiliation: Department of Medicine, Massachusetts General Hospital, Boston.
authors.forename: Zirui
authors.initials: Z
authors.lastname: Song
authors.affiliation: The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, New Hampshire.
authors.forename: Elliott S
authors.initials: ES
authors.lastname: Fisher
mesh_terms: D060866:Accountable Care Organizations / Q000191:economics* / Q000458:organization & administration; D017046:Cost Savings; D006801:Humans; D017059:Models, Econometric; D010816:Physician Incentive Plans / Q000191:economics; D015397:Program Evaluation; D058996:Quality Improvement; D011787:Quality of Health Care; D012017:Referral and Consultation / Q000191:economics; D014481:United States; D062505:Value-Based Purchasing