Medicare today: key features of the current system
Medicare's incentive and distributional effects
A five-part conceptual decomposition of Medicare
Medicare's social insurance and risk prevention purposes
Medicare's long-term fiscal gap and its underlying causes
Significance of Medicare's long-term fiscal gap
Paying for Medicare I: benefits
Paying for Medicare II: enrollee contributions
Paying for Medicare III: other financing to narrow the fiscal gap
Conclusions and predictions.