To make wise choices about their health care, people often want to know about the quality and efficiency of the care being dispensed by individual physicians, groups of physicians, hospitals, and health systems. Various organizations, like health insurance companies, and regulatory agencies, like the Centers for Medicare & Medicaid Services (formerly the Health Care Financing Administration), regularly issue “report cards” on the quality of health care and the performance of those who provide it. These reports typically use a method called benchmarking, an approach that measures performance on standard quality indicators like patient outcomes (such as mortality rates), processes (such as tests administered), or costs of care (such as charges for surgical procedures). This information is then compared with a standard.