NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Tianyan Hu

University of Pennsylvania
423 Guardian Dr
1404 Blockley Hall
Philadelphia,PA 19104

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org

NBER Working Papers and Publications

November 2014The Impact of Health Insurance Expansion on Physician Treatment Choice: Medicare Part D and Physician Prescribing
with Sandra L. Decker, Shin-Yi Chou: w20708
We test the effect of the introduction of Medicare Part D on physician prescribing behavior by using data on physician visits from the National Ambulatory Medical Care Survey (NAMCS) 2002-2004 and 2006-2009 for patients aged 60-69. We use a combined DD-RD specification that is an improvement over either the difference-in-difference (DD) or regression discontinuity (RD) designs. Comparing the discrete jump in outcomes at age 65 before and after 2006, we find a 35% increase in the number of prescription drugs prescribed or continued per visit and a 55% increase in the number of generic drugs prescribed or continued, providing evidence of physician response to changes in patient out-of-pocket costs.

Published: Tianyan Hu & Sandra L. Decker & Shin-Yi Chou, 2017. "The impact of health insurance expansion on physician treatment choice: Medicare Part D and physician prescribing," International Journal of Health Economics and Management, vol 17(3), pages 333-358.

 
Publications
Activities
Meetings
NBER Videos
Themes
Data
People
About

National Bureau of Economic Research, 1050 Massachusetts Ave., Cambridge, MA 02138; 617-868-3900; email: info@nber.org

Contact Us