BCBSIL, Springfield Clinic reach agreement Dec 22, 2023 | Insurance, Top Stories Blue Cross and Blue Shield of Illinois and Springfield Clinic have reached an agreement to bring the provider back into the insurer's network, the two announced Friday afternoon.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.