title: What's different about a PSO?
authors.affiliation: Lewin Group, Fairfax, VA, USA.
authors.forename: R F
authors.initials: RF
authors.lastname: Atlas
authors.forename: P K
authors.initials: PK
authors.lastname: Costanza
mesh_terms: D002017:Budgets; D002202:Capital Financing; D002204:Capitation Fee; D014487:Centers for Medicare and Medicaid Services, U.S.; D019058:Community Networks / Q000191:economics / Q000331:legislation & jurisprudence / Q000458:organization & administration*; D003362:Cost-Benefit Analysis; D019461:Employee Retirement Income Security Act; D008004:Licensure / Q000331:legislation & jurisprudence; D006278:Medicare / Q000331:legislation & jurisprudence*; D009935:Organizational Affiliation; D010067:Ownership; D014481:United States