Center for Outcomes and Evidence
540 Gaither Road, 6th Floor
Gaithersburg,
MD 20850
301-427-1600 (Voice)
The National Guideline Clearinghouse™ is a public resource for evidence-based clinical practice guidelines. NGC is an initiative of the Agency for Healthcare Research and Quality (AHRQ), U.S. Department of Health and Human Services. NGC was originally created by AHRQ in partnership with the American Medical Association and the American Association of Health Plans (now America's Health Insurance Plans [AHIP]).