The impact of health insurance expansion on physician treatment choice: Medicare Part D and physician prescribing.
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 regression discontinuity designs to estimate the effect of part D around the age of 65 before and after 2006 and then compare the discrete jump in outcomes at age 65 before and after Part D. We find a 32% increase in the number of prescription drugs prescribed or continued per visit and a 46% increase in the number of generic drugs prescribed or continued for the elderly after the introduction of Medicare Part D.
Department of Health Policy and Management, Florida International University, AHC5-452, 11200 SW 8th Street, Miami, FL, 33199, USA. tihu@fiu.edu.
Tianyan
T
Hu
Agency for Healthcare Research and Quality (AHRQ), 540 Gaither Road, Rockville, MD, 20850, USA.
Sandra L
SL
Decker
Department of Economics, Lehigh University, 621 Taylor Street, Bethlehem, PA, 18015, USA.
Shin-Yi
SY
Chou
Expenditure of health care; Medicare; Part D; Prescribing pattern; Prescription drug