The National Bureau of Economic Research
NBER Digest OnLine, October 2011
In the United States, public health insurance programs cover over 90 million individuals. Changes in the scope of these programs, such as the Medicaid expansions under the recently passed Patient Protection and Affordable Care Act, or in the generosity of these programs, may affect physician behavior.
In “The Doctor Might See You Now: the Supply Side Effects of Public Health Insurance Expansions” (NBER Working Paper No. 17070), Craig Garthwaite finds that after the 1990s implementation of the State Children’s Health Insurance Program (SCHIP) – a partnership between federal and state governments intended to increase insurance coverage for low-income Americans under the age of 19 – more physicians participated in the program, but their total number of hours spent with patients declined as a result of shorter office visits.
Garthwaite finds that there were fewer visits that lasted more than 10 minutes after this public program expansion. The evidence on shorter office visits is consistent with economic models of physician behavior in a system with both public and private payers.
The negative effects of reductions in physician labor supply, such those observed in this study, may be particularly important for Medicaid patients because they are covered by a program that is increasingly not accepted by physicians.
http://www.nber.org/digest/oct11/w17070.html
Comment:
By Don McCanne, MD
Most of us who support a single payer national health program do so primarily because it would provide high quality, comprehensive care for everyone. Although the Affordable Care Act will not cover everyone, much of the expansion in coverage that it does accomplish is through increased eligibility for the Medicaid and CHIP programs, chronically underfunded welfare programs. This study demonstrates that such an approach does result in a system with at least two tiers, the lower tier patients facing shorter visits and a decline in access to participating physicians.
There is already enough money in our health care system to provide a single level of comprehensive, high quality care for everyone. We should reject the concept of a separate, underfunded, lower tier program for low-income individuals and families, with a higher tier of great care for the rest of us (though the Affordable Care Act certainly doesn’t ensure that either).