http://www.health.gov/NHIC/Pubs/2008tollfreenumbers/tollfreenumbers1.htm
National Health Information Center, U.S. Department of Health and Human Services
This online listing of Federal and non-federal 800 numbers for organizations providing health information to the public and to professionals is maintained as part of the Health Information Resources database at the National Health Information Center. Some numbers offer recorded information; others provide personalized counseling, referrals, and/or written materials. Hours/days of operation are listed for each service.