Centers for Medicare and Medicaid Services (CMS) HIPAA Home Site http://cms.hhs.gov/hipaa/  

National Institute of Mental Health (NIMH)
http://www.nimh.nih.gov

National Institute on Drug Abuse (NIDA)
http://www.nida.nih.gov/

National Institutes of Health (NIH)
http://privacyruleandresearch.nih.gov/

Food and Drug Administration (FDA)
http://www.fda.gov/cder/regulatory/ersr/2002_11_05_standards1/sld023.htm

Indian Health Service (IHS)
http://www.ihs.gov/AdminMngrResources/HIPAA/index.cfm

Agency for Healthcare Research & Quality (AHRQ)
http://www.ahcpr.gov/data/hipaa1.htm

Agency for Toxic Substances & Disease Registry
http://www.atsdr.cdc.gov/