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Discussion Paper Details

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Title: Selective contracting and foreclosure in health care markets

Author(s): Michiel Bijlsma, Jan Boone and Gijsbert Zwart

Publication Date: November 2009

Keyword(s): anti-competitive effects, exclusion, foreclosure, health insurance, selective contracting and uninsured

Programme Area(s): Industrial Organization

Abstract: 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.

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Bibliographic Reference

Bijlsma, M, Boone, J and Zwart, G. 2009. 'Selective contracting and foreclosure in health care markets'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=7576