Shopping for price in medical care.

Insurers are well positioned to support their enrollees in shopping for care because of their ability to analyze complex data--reflecting both their negotiated discounts and the enrollee's benefit structure--should they decide to commit resources to this task. Government transparency initiatives can help those who are uninsured or want to use out-of-network providers with data on prices and all patients by gathering and disseminating data on quality. But clumsy requirements to disclose insurer-provider contracts could lead to higher prices. Greater price transparency might help curb rising costs, but many overstate the likely magnitude of its contribution.