Group Purchasing Organizations: Research on Their Pricing Impact on Health Care Providers

Hospitals and other health care providers use purchasing intermediaries--group purchasing organizations (GPO)--as a way to control the cost of various medical products. Through GPO-negotiated contracts, hospitals and other health care providers can purchase everything from commodities, such as cotton balls and bandages, to high-technology medical devices, such as pacemakers and stents. By pooling the purchases of these products for their customers, GPOs are in a position to negotiate lower prices from manufacturers, distributors, and other suppliers, which may in turn benefit health care providers and, ultimately, consumers and payers of health care such as insurers and employers. Members of Congress and others have recently raised questions about the extent to which GPOs negotiate lower prices for health care providers. GPO and other trade associations have funded studies on the impact of GPOs. However, these studies have limitations. Congress asked us to review research on the impact of GPOs on pricing for hospitals and other health care providers. This report summarizes the peer-reviewed and nonpeer-reviewed literature on the impact of GPOs on pricing for hospitals and other health care providers that GAO identified in GAO's literature review.