title: Choices abound in the vast new world of Medicare: HMO, PPO, PSO, MSA.
authors.affiliation: Government Affairs Department, American Association of Health Plans, USA.
authors.forename: M
authors.initials: M
authors.lastname: Van Koevering
mesh_terms: D000368:Aged; D014487:Centers for Medicare and Medicaid Services, U.S.; D003256:Community Participation; D017047:Cost Sharing; D018588:Fee-for-Service Plans / Q000639:trends*; D005382:Financing, Personal; D006801:Humans; D008119:Lobbying; D008329:Managed Care Programs / Q000639:trends*; D016345:Medicare Part B / Q000191:economics / Q000639:trends*; D014481:United States