Share all NPI(s) You Use for Medicare with BCBSIL Today!
In the event of crossover claims, BCBSIL must have a record of the NPI(s) you use for Medicare claims. Without this information, our system will not be able to recognize you as the billing provider and we will have problems adjudicating these claims.

The fastest way to share your NPI(s) with us is via e-mail on our Provider Web site (click on the NPI Logo, and then click on Share it!). We will attempt to verify your NPI using the NPPES registry; however, if your NPI is not found on the NPI Registry, or if the data doesn’t match, then we reserve the right to request submission of your confirmation notice from the Enumerator. 

As a reminder:
Always submit your claims to Medicare first when Medicare is primary. The BCBS supplemental claims then automatically crossover. The electronic crossover claims have the EOMB information (claim and remittance data) that is needed to process the BCBS supplemental claim.

For more information on the electronic submission of Medicare Primary and Blue cross and Blue Shield Secondary claims, access the Medicare B Supplemental Claim Submission Reference Guide.