scholarly journals Prescription Drug Insurance Coverage, Drug Utilization, and Cost-Related Non-Adherence: Evidence from the Medicare Part D Expansion

2011 ◽  
Author(s):  
Gary V. Engelhardt
2011 ◽  
Vol 3 (4) ◽  
pp. 77-102 ◽  
Author(s):  
Gary V Engelhardt ◽  
Jonathan Gruber

We examine the impact of the expansion of public prescription-drug insurance coverage from Medicare Part D and find evidence of substantial crowd-out. Using the 2002–2007 waves of the Medical Expenditure Panel Survey, we estimate the extension of Part D benefits resulted in 75 percent crowd-out of both prescription-drug insurance coverage and expenditures of those 65 and older. Part D is associated with sizeable reductions in out-of-pocket spending, much of which has accrued to a small proportion of the elderly. On average, we estimate a welfare gain from Part D comparable to the deadweight cost of program financing. (JEL H51, I18, J14)


2020 ◽  
Vol 12 (1) ◽  
pp. 389-417
Author(s):  
Gal Wettstein

I examine whether lack of an individual market for prescription drug insurance causes individuals to delay retirement. Exploiting the 2006 introduction of Medicare Part D, which subsidized drug insurance for Americans over age 65, I use a triple-differences design that compares labor outcomes of individuals with retiree health insurance up to age 65 to those with insurance for life, before and after age 65, before and after 2006. I find that those with benefits only to age 65 decreased full-time work by 8.4 percentage points, of which 70 percent was due to transitions to part-time work. (JEL G22, H51, I13, I18, J14, J26)


2014 ◽  
Vol 6 (1) ◽  
pp. 38-64 ◽  
Author(s):  
Keith M. Marzilli Ericson

I use the Medicare Part D prescription drug insurance market to examine the dynamics of firm interaction with consumers on an insurance exchange. Enrollment data show that consumers face switching frictions leading to inertia in plan choice, and a regression discontinuity design indicates initial defaults have persistent effects. In the absence of commitment to future prices, theory predicts firms respond to inertia by raising prices on existing enrollees, while introducing cheaper alternative plans. The complete set of enrollment and price data from 2006 through 2010 confirms this prediction: older plans have approximately 10 percent higher premiums than comparable new plans. (JEL G22, I13, I18, L11, L65)


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