… the context of competitive health plan markets. By competitive, we mean markets in which
individual consumers have a periodic choice of health plan and health plans may take actions, …

… , plans, purchasers, and providers … competition among health plans in their market, (2) the
factors that were most likely to determine plan success and (3) the specific strategies that plans …

… competition in health care and earlier attempts to instill competition into health care markets
… Consumer-directed health plans (CDHPs) enable people to treat their health care expenses …

… squared market shares of every plan operating in a particular market, is … competitiveness
of markets. Using data from 1999, we examine the belief that plans in more competitive markets …

… We believe that by highlighting the two-sided market structure of the health plans' competition,
our model provides a new insight to understand the increase in the PPOs' market share as …

… imperfectly competitive settings. Using a proprietary national database of health plans offered
… health plans. Moreover, within a given firm, those sites located in concentrated insurance …

… The idea is that the rise of HMOs introduced aggressive price negotiations between hospitals
and health plans, thereby giving hospitals a strong incentive to acquire bargaining power …

… expanded range of market instruments, such as managed care and private plans, in these
… as consumers choosing among competing private health plans—is certain to accelerate …

… consumers across health plans. On the supply side, adverse selection creates incentives for
plans to … Building on prior research on health plan payment system evaluation, we develop …

… competition between physicians and health plans is far from complete. This article reviews
some of the issues important for measuring competition in health care markets. … for health care …