title: Perspectives. Medicare 'Mega-reg' adds to challenges faced by new plans hoping to compete.
authors: R
authors: R
authors: Cunningham
mesh_terms: D000368:Aged; D014487:Centers for Medicare and Medicaid Services, U.S.; D003256:Community Participation / Q000331:legislation & jurisprudence*; D018588:Fee-for-Service Plans; D006801:Humans; D007255:Information Services; D008329:Managed Care Programs / Q000331:legislation & jurisprudence*; D016345:Medicare Part B / Q000331:legislation & jurisprudence*; D011243:Preferred Provider Organizations; D014481:United States