Assessing health reform's impact on four key groups of Americans.

Health reform can be assessed from the perspective of four groups that collectively include most Americans. For those who are now in Medicaid or who are uninsured, reform will be a major gain. For those who obtain health insurance in the individual and small-group markets, reform should bring improvements. For those who have health insurance from midsize- and large-group insurers, reform will bring little change. Finally, for Medicare beneficiaries, reform promises to bring positive change. However, financing future health spending overall, and Medicare spending in particular, poses a formidable challenge. Although not a panacea, all-payer rate setting, in which a federal or state agency establishes standard payment rates for each class of payer, may be the only feasible alternative, at least in the short run.