BlueCross BlueShield of Illinois
Federal Dental Blue
Our Customer Advocates are available Monday - Friday 8:00 a.m. - 6:00
p.m. (CT) to assist with your dental benefits at 1-866-431-1595 or by
mail at:
Federal DentalBlue
Blue Cross Blue Shield of Illinois
P.O. Box 23150
Belleville, IL 62223
or