Contact Us

Have you visited our Frequently Asked Questions page? There, you'll find information that can help you log in to and use your Blue Cross and Blue Shield of Montana (BCBSMT) member account, understand your health insurance plan and answer some of our members' most common questions.

Individual & Family

Review the Individual and Family Contact Guide.

I have questions about enrolling in a new plan:

1-855-594-1515

I'm a member with a question for customer service:

1-800-447-7828
Calls may or may not be answered inside the United States.

Monday – Friday: 6 a.m. – 7 p.m. MST
Saturday: 7 a.m. – 4 p.m. MST
Sunday: Closed

I want to make a payment:

Mail your payment to the address on your invoice or learn about other convenient ways to pay your bill.

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Medicare (65+)

I have a question about enrolling in Medicare:

1-866-940-3022 (TTY 711)

I'm a Medicare Supplement member:

1-855-520-1577 (TTY 711)

I'm a Medicare Advantage member:

1-877-774-8592 (TTY 711)

I'm a Medicare member with a medical appeal or grievance:

1-877-774-8592 (TTY 711)

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Employer-Offered Plans

I get my health insurance plan through my employer:

If you have questions or need help, call Customer Service at the number listed on your member ID card.

If you have a PPO plan, you can also call 1-855-258-3489.

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Provider Support

I'm a provider in the BCBSMT network and have a question:

General provider relations: 1-406-437-6100
Email: hcsx6100@bcbsmt.com

For more specific contact information, please use the Provider Contact Reference Guide.

Office hours available Monday - Friday, 7 a.m. - 5 p.m.

Blue Cross and Blue Shield of Montana
3645 Alice Street
PO Box 4309
Helena, MT 59604-4309

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Additional Contact Information

Last Updated: Nov. 06, 2023