Selective Contracting and Foreclosure in Health Care Markets
CentER Discussion Paper Series No. 2009-89
36 Pages Posted: 21 Nov 2009 Last revised: 8 Oct 2010
Date Written: November 16, 2009
We analyze exclusive contracts between health care providers and insurers in a model where some consumers choose to stay uninsured. In case of a monopoly insurer, exclusion of a provider changes the distribution of consumers who choose not to insure. Although the foreclosed care provider remains active in the market for the non-insured, we show that exclusion leads to anti-competitive effects on this non-insured market. As a consequence exclusion can raise industry profits, and then occurs in equilibrium. Under competitive insurance markets, the anticompetitive exclusive equilibrium survives. Uninsured consumers, however, are now not better off without exclusion. Competition among insurers raises prices in equilibria without exclusion, as a result of a horizontal analogue to the double marginalization effect. Instead, under competitive insurance markets exclusion is desirable as long as no provider is excluded by all insurers.
Keywords: health insurance, uninsured, selective contracting, exclusion, foreclosure, anti-competitive effects
JEL Classification: L42, I11, G22
Suggested Citation: Suggested Citation