title: Assessing an ACO prototype--Medicare's Physician Group Practice demonstration.
authors.forename: John K
authors.initials: JK
authors.lastname: Iglehart
mesh_terms: D017046:Cost Savings; D033161:Government Regulation; D006123:Group Practice / Q000191:economics*; D018854:Managed Competition / Q000331:legislation & jurisprudence* / Q000458:organization & administration; D006278:Medicare / Q000191:economics*; D058991:Patient Protection and Affordable Care Act; D010816:Physician Incentive Plans; D011445:Prospective Payment System; D014481:United States; D014483:United States Dept. of Health and Human Services