TY - JOUR AU - Heiss,Florian AU - McFadden,Daniel AU - Winter,Joachim TI - Mind the Gap! Consumer Perceptions and Choices of Medicare Part D Prescription Drug Plans JF - National Bureau of Economic Research Working Paper Series VL - No. 13627 PY - 2007 Y2 - November 2007 UR - http://www.nber.org/papers/w13627 L1 - http://www.nber.org/papers/w13627.pdf N1 - Author contact info: Florian Heiss University of Duesseldorf LS Statistics and Econometrics Universitaetsstrasse 1, Geb. 24.31 40225 Düsseldorf Germany E-Mail: florian.heiss@hhu.de Daniel L. McFadden University of California, Berkeley Department of Economics 549 Evans Hall #3880 Berkeley, CA 94720-3880 Tel: 510/643-8428 Fax: 510/642-0638 E-Mail: mcfadden@econ.berkeley.edu Joachim Winter Department of Economics LMU Ludwigstr. 28 (RG) D-80539 Munich Germany E-Mail: winter@lmu.de M1 - published as Florian Heiss, Daniel McFadden, Joachim Winter. "Mind the Gap! Consumer Perceptions and Choices of Medicare Part D Prescription Drug Plans," in David A. Wise, editor, "Research Findings in the Economics of Aging" University of Chicago Press (2010) M3 - presented at "Economics of Aging", May 11- , 2007 AB - Medicare Part D provides prescription drug coverage through Medicare approved plans offered by private insurance companies and HMOs. In this paper, we study the role of current prescription drug use and health risks, related expectations, and subjective factors in the demand for prescription drug insurance. To characterize rational behavior in the complex Part D environment, we develop an intertemporal optimization model of enrollment decisions. We generally find that seniors' choices respond to the incentives provided by their own health status and the market environment as predicted by the optimization model. The proportion of individuals who do not attain the optimal choice is small, but the margin for error is also small since enrollment is transparently optimal for most eligible seniors. Further, there is also evidence that seniors over-react to some salient features of the choice situation, do not take full account of the future benefit and cost consequences of their decisions, or the expected net benefits and risk properties of alternative plans. ER -