BCBS Illinois provider contacts
Provider-facing contacts for BCBS Illinois: provider services, prior authorization, claims, appeals, eligibility and claims portals, credentialing, EDI payer ID. Every value comes from a public BCBS Illinois page or manual, linked next to it, and is rechecked against that source on a schedule.
Last verified Nov 3, 2026
We aggregate public payer sources. Verify with the payer. Numbers can differ by plan, state and line of business.
Provider services
- Provider Customer Service (Commercial)Commercial, ILphone800-972-8088Mon-Fri 8 a.m. to 11:30 p.m. CT; Sat 6 a.m. to 3:30 p.m. CT
- Blue Cross Community Health Plans Provider Customer ServiceMedicaid, ILphone877-860-2837
- Medicare Advantage Provider Customer Service (Individual plan)Medicare, ILphone877-774-8592
- Medicare Advantage Provider Customer Service (Group plan)Medicare, ILphone877-299-1008
Prior authorization
- Carelon Medical Benefits ManagementILphone866-455-8415
- Medical Management (Commercial non-HMO)Commercial, ILphone800-572-3089
- Medical Management (Medicaid)Medicaid, ILphone877-860-2837
- Medicare Advantage prior authorization faxMedicare, ILfax855-874-4711Phone 877-774-8592
Claims
- Commercial paper claimsCommercial, ILaddressBCBSIL, PO Box 660603, Dallas, TX, 75266-0603
- Blue Cross Community Health Plans paper claimsMedicaid, ILaddressBlue Cross Community Health Plans, c/o Provider Services, PO Box 650712, Dallas, TX 75265-0712
- Medicare Advantage paper claimsMedicare, ILaddressBlue Cross Medicare Advantage, c/o Provider Services, PO Box 3686, Scranton, PA 18505
Appeals
- Medicare Advantage appeals fax (standard)Medicare, ILfax1-800-419-2009
- Medicare Advantage appeals fax (expedited)Medicare, ILfax1-800-338-2227
- Medicare Advantage provider disputesMedicare, ILaddressBlue Cross Medicare Advantage, c/o Provider Disputes, PO Box 4555, Scranton, PA 18505Provider disputes fax 1-855-674-9192
Eligibility and claims portals
- Availity EssentialsILurlhttps://www.availity.com/essentials/
- Electronic Commerce Services emailILemailecommerceservicesIL@bcbsil.com
Credentialing
- Join the BCBSIL networkILurlhttps://www.bcbsil.com/provider/network/network/join-bcbsil-network
- Credentialing status checkILurlhttps://provider.bcbsil.com/ILCredentialStatus
EDI payer ID
- Medicare Advantage payer IDMedicare, ILtext66006
Get alerts when BCBS Illinois changes a policy
Prior auth lists, billing rules and coverage changes from BCBS Illinois, summarized and sent by email: daily or weekly, your choice, on every plan.