NCQA is a private, nonprofit organization dedicated to improving health care quality. NCQA accredits and certifies a wide range of health care organizations. It also recognizes clinicians and practices in key areas of performance. NCQA’s Healthcare Effectiveness Data and Information Set (HEDIS®) is the most widely used performance measurement tool in health care. NCQA’s Web site (ncqa.org) contains information to help consumers, employers and others make more informed health care choices.