Agency for Health Care Research and Quality (AHRQ)
http://www.ahcpr.gov/

CDC
http://www.cdc.gov

Department of Health and Human Services
http://www.os.dhhs.gov/

Food and Drug Administration (FDA)
http://www.fda.gov/

Health Resources and Services Administration
http://www.hrsa.dhhs.gov/

National Health Information Center (NHIC)
http://nhic-nt.health.org/

National Institute of Health
http://www.nih.gov

National Women's Health Information Center
http://www.4women.gov

Office of Minority Health Resources Center (OMHRC)
http://www.omhrc.gov/

Substance Abuse and Mental Health Services Administration (SAMHSA)
http://www.samhsa.gov/

U.S. Census Bureau
http://www.census.gov