The following phone and address information is for Illinois residents enrolled in Blue Cross and Blue Shield of Illinois individual and family health insurance plans:
(800) 538-8833
(800) 810-2583
(800) 851-7498
(800) 624-41726
(888) 788-4184
(800) 972-8088
Mail Claims to:
Hallmark Services Corp
Administrator for Blue Cross and Blue Shield of Illinois
P.O. Box 2037
Aurora IL 60507-2037
Mail Premium Payments to:
Blue Cross and Blue Shield of Illinois
P.O. Box 2039
Aurora IL 60507