New Version of Part D Paper Posted

After a two-year revision, we have posted a new version of our paper, “Subsidy Design in Privately-Provided Social Insurance: Evidence from Medicare Part D.” This paper was formerly titled “The Welfare Effects of Supply-Side Regulations in Medicare Part D.” The two major changes in this version are the use of microdata and the inclusion of multiple risk types, allowing us to endogenize the marginal cost curve as a function of market prices. The paper can be found here: PDF.