Kaiser Permanente
http://www.kaiserpermanente.org
Pacificare
http://www.pacificare.com
Blue Cross link to provider lookup
http://pd.web.wellpoint.com/epf/finderRouter?Company=BCC
BrightNow!
http://www.brightnow.com
Sav-Rx
http://www.savrx.com
VSP
http://vsp.com
Medicare
http://www.medicare.gov