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American Economic Review Vol. 100 No. 1 2010

The Effect of Medicare Part D on Pharmaceutical Prices and Utilization

Mark Duggan1; Fiona Scott Morton2

1 Department of Economics, University of Maryland, 3105 Tydings Hall, College Park, MD 20742. · 2 Yale School of Management, Box 208200, New Haven, CT 06520-8200.

Abstract

Medicare Part D began coverage of prescription drugs in 2006. Rather than setting pharmaceutical prices, the government contracted with private insurers to provide drug coverage. Theory suggests that additional insured consumers will raise the optimal price of a branded drug, while the insurer's ability to move demand to substitute treatments may lower prices. We estimate the program's effect on the price and utilization of pharmaceutical treatments. We find that Part D enrollees paid substantially lower prices than while uninsured, and increased their utilization of prescription drugs. We find relative price declines only for drugs with significant therapeutic competition.

DOI
10.1257/aer.100.1.590
Volume
100
Issue
1
Pages
590-607
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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