Resource sites:

Credentialing  http://www.healthlink.com/credentialingresponsibilities.asp
Department of Health and Human Services  http://www.dhhs.gov
Health Care Financing Administration http://cms.hhs.org
National Council for Prescription Drug Programs  http://www.ncpdp.org
Data Interchange Standards Association  http://www.disa.org
National Uniform Claim Committee  http://www.nucc.org
American Dental Association  http://www.ada.org
Workgroup for Electronic Data Interchange  http://www.wedi.org
Mayo Clinic  http://www.mayoclinic.com
WebMD  http://www.webmd.com
Saint Vincent Hospital  http://www.svhhc.org
Deaconess Billings Clinic  http://www.billingsclinic.com