NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

G. Caleb Alexander

Johns Hopkins University
Department of Epidemiology

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NBER Working Papers and Publications

February 2014Effects of Prescription Drug Insurance on Hospitalization and Mortality: Evidence from Medicare Part D
with Robert Kaestner, Cuiping Long: w19948
We examine whether obtaining prescription drug insurance through the Medicare Part D program affected hospital admissions, expenditures associated with those admissions, and mortality. We use a large, geographically diverse sample of Medicare beneficiaries and exploit the natural experiment of Medicare Part D to obtain estimates of the effect of prescription drug insurance on hospitalizations and mortality. Results indicate that obtaining prescription drug insurance through Medicare Part D was associated with an 8% decrease in the number of hospital admissions, a 7% decrease in Medicare expenditures, and a 12% decrease in total resource use. Gaining prescription drug insurance through Medicare Part D was not significantly associated with mortality.
October 2008The impact of Medicare Part D on Medicare-Medicaid Dual-eligible Beneficiaries' Prescription Utilization and Expenditures
with Anirban Basu, Wesley Yin: w14413
Features of Part D gave rise to broad concern that the drug benefit would negatively impact prescription utilization among the six million dual eligible beneficiaries, either during the transition from state Medicaid to Part D coverage, or in the long-run. At the same time, Part D contained other features, such as its auto-enrollment and premium subsidization policies, which were designed to safeguard utilization for this vulnerable group. Using national retail pharmacy claims, we examine the experience of dual eligibles during the first 18 months of Part D. We find no evidence that Part D adversely affected pharmaceutical utilization or out-of-pocket expenditures in the transition period, or in the 18 months subsequent to Part D implementation.

Published: A Basu & W Yin & GC Alexander, 2009. "PHP26 THE IMPACT OF MEDICARE PART D ON MEDICARE-MEDICAID DUAL-ELIGIBLE BENEFICIARIES' PRESCRIPTION UTILIZATION AND EXPENDITURES," Value in Health, vol 12(3).

 
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