Amidst high and rising health care costs, recent federal regulations require hospitals and health plans to publicly post their prices. Such data can be useful for those seeking to control costs and improve affordability, but lack of compliance with the new requirements and data accessibility have made analysis difficult. To gain insights into the potential for this data and generate ideas for how to optimize the information to help reduce health system costs, CHIR convened a meeting of health care researchers, purchasers, and insurance regulators from around the country.