The nature, and normative properties, of competition in health care markets has long been the subject of much debate …. In particular, policymakers have exhibited a great deal of reservation toward competition in health care markets, as … care markets, concern about reduced competition has arisen. This concern, however, cannot be properly evaluated without a …

competition among health plans for enrollees as well as allowing consumers to enroll in the type of coverage that most closely …. The results are not consistent with the availability of choice leading to lower premiums through greater competition among …

insurance market), we study the impact of competition on premiums. We exploit variation in ratings-area-level competition …

The impact of insurer competition on welfare, negotiated provider prices, and premiums in the U.S. private health care … industry is theoretically ambiguous. Reduced competition may increase the premiums charged by insurers and their payments made …

of the individual insurance market, the Marketplaces invoke many of the principles of regulated competition including … the tools of regulated competition. We then discuss ways in which the Marketplace model deviates from the more …