“…Variations in market power appear, to at least some extent, to underlie variations in health care payments (Dunn andShapiro, 2012, 2014;Cooper, Craig, Gaynor, and Van Reenen, 2015). Additional issues, including intransparency and the pervasiveness of public-private payment linkages, raise further questions about the efficiency of private health care payment setting (Batty and Ippolito, 2017;Brill, 2013;Clemens, Gottlieb, and Molnar, 2015). At the same time, mandated price consistency erodes incentives for providing services with high quality on dimensions that are difficult for regulators to measure, or in which they take no interest (Pauly and Town, 2012).…”