American Association of Preferred Provider Organizations (AAPPO) http://www.aappo.org

Self-insurance Institude of America (SIIA) http://www.siia.org

American's Health Insurance Plans (AHIP)http://www.ahip.org

Better Business Bureau (BBB) http://www.bbb.org

Health Care Administrators Association (HCAA) http://www.hcaa.org/