Blue Cross Medicare AdvantageSM Plans

Medicare Advantage plans offer all the coverage of Original Medicare — plus benefits not covered by Medicare or most Medicare Supplement insurance plans, including built-in prescription drug coverage and extra health and wellness options. Blue Cross and Blue Shield of Montana (BCBSMT) offers both individual and group Medicare Advantage plans.

  • Our service area includes the following counties in Montana: Carbon, Cascade, Flathead, Gallatin, Lake, Lewis and Clark, Lincoln, Missoula, Ravalli, Silver Bow, and Yellowstone. We are expanding in Jefferson, Broadwater, Granite, Powell, and Deer Lodge Counties for Medicare Advantage, effective 1/1/2022.

Our strong brand recognition and our historical relationship with Medicare makes BCBSMT an excellent choice for Medicare-eligible individuals. We maintain and monitor a network of participating providers including physicians, hospitals, skilled nursing facilities, ancillary providers, and other health care providers through which members obtain covered services.

  • Our retiree group Medicare plans are Blue Cross Group Medicare Advantage (PPO)SM and Blue Cross Group Medicare Advantage Open Access (PPO)SM.

Out-of-network Note: If you see Medicare members or accept Medicare assignment and are willing to bill BCBSMT, you may treat Blue Cross Group Medicare Advantage Open Access (PPO) members. These members enjoy the same level of coverage as other Medicare Advantage members with no network restrictions. Out-of-network providers will be paid the Medicare-allowed amount less any member cost-sharing. In-network providers will be paid at their contracted rate. For eligibility, prior authorization or claims inquiries, call 877-299-1008.


Participating physicians, professional providers, and facility providers must submit claims to Blue Cross Medicare Advantage within 365 days of the date of service, using the standard CMS-1500 or UB-04 claim form, or electronically. Services billed beyond 365 days from the date of service are not eligible for reimbursement.

Paper Claim Mailing Address and Fax

Blue Cross Medicare Advantage
P.O. Box 3686
Scranton, PA 18505

New Payer ID (66006) – Beginning Jan. 1, 2017, Payer ID 66006 must be included on electronic claims received for Blue Cross Medicare Advantage PPO and Blue Cross Medicare Advantage HMO members. Blue Cross Medicare Advantage claims received with the commercial Payer ID (BCBS) will not be accepted.*

*If you utilize a practice management/hospital information system or billing service, and/or a clearinghouse other than AvailityTM or HeW for electronic claim submission, please contact your vendor to confirm they are using the new Payer ID for the alpha prefixes referenced above, rather than assigning their own unique number.

Contact Us

Provider Claims Address

Payment cycles for electronic funds transfers (EFT) will be changing from daily to weekly.

Blue Cross Medicare Advantage (Claims)
P.O. Box 3686
Scranton, Pa. 18505
EDI Claims Payer ID 66006
Appeals Address Blue Cross Medicare Advantage
Attention: Appeals Department
PO Box 663099
Dallas, TX 75266
Standard Appeals Fax Number 1-800-419-2009
Expedited Appeals Fax Number 1-800-338-2227
Grievances Address Blue Cross Medicare Advantage
Attn: Grievances Department
PO Box 4288
Scranton, PA 18505
Grievances Fax Number 1-855-674-9189
Provider Disputes Blue Cross Medicare Advantage
P O Box 4555
Scranton, PA 18505
Medical Records Blue Cross Medicare Advantage
P O Box 4555
Scranton, PA 18505
Member Reimbursement Claims Blue Cross Medicare Advantage
P.O. Box 4195
Scranton, PA 18505
RPO, VOP, and EPIC – Claims Address PO Box 2888
Houston, TX 77252-2888
Magellan Claims Address P.O. Box 1289
Maryland Heights, MO 63043
Refund Address:

ERM (Electronic Refund Management), claims refund and inquiry process post 1/1/17 will not be available through ERM

Blue Cross Blue Shield of Montana
Claims Overpayments
Dept. CH 14212
Palatine, IL 60055-4212

Courier Address:
Blue Cross and Blue Shield of Montana Claims Overpayments
Box 14212
5505 N. Cumberland Ave.
Suite 307
Chicago, IL 60656-1471
Customer Service Phone Numbers Individual: 1-877-774-8592
Group: 1-877-299-1008

Join the Network

To join our Blue Cross Medicare Advantage network, follow the process for Network Participation.

Preauthorization Requirements