PPOs and HMOs have pined widespread acceptance due in part to the belief that excess capacity and competitive market conditions can be leveraged to negotiate lower prices with health care providers. We investigated pr...
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PPOs and HMOs have pined widespread acceptance due in part to the belief that excess capacity and competitive market conditions can be leveraged to negotiate lower prices with health care providers. We investigated prices obtained in different types of markets by the largest PPO in California. Our findings indicate that greater hospital competition leads to lower prices. Furthermore, as the importance of a hospital to the PPO in an area increases, the price rises substantially. Our testing of alternative methods for defining hospital geographic markets reveals that the common practice of using counties to define the market leads to an underestimate of the price-increasing effects of a merger.
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