Idaho Forms & Docs

MHC Direct Purchase Individual/Family Applications — No Tax Credit

MHC Group Applications

Idaho Broker Documents

Idaho Medicare Supplement 

Montana Forms & Docs

MHC Direct Purchase Individual/Family Applications — No Tax Credit

MHC Group Applications

Montana Broker Documents

Montana Medicare Supplement 

Medicare Supplement Contact information​

Please see below the contact information for questions related to applications submitted, underwriting, commission inquiries, and active member inquiries. The contact information is also on our various documents associated with our products.



Medicare Supplement Administrative Office

P.O. Box 2209, Duncan, OK 73034-2209

Telephone: 800-366-8354


For E-Application log in assistance:

Telephone: 1-855-861-8776 (choose option 4)

Business Hours: 8:00a-5:00p (CST) M-Th

                                  8:00a-12:00p(CST) F

Messages left generally get a call back within an hour.​

To submit new business hard copy applications:


Broker Portal

Our broker portal is unsurpassed in its ease of use, full functionality and unique connections to information you need.

Available 24/7/365, our broker portal enables you to:

Get instant quotes

Estimate subsidies and see premiums that reflect those subsidies

Review all your clients’ information (for MHC direct sales)

Complete your sale


Delight Your Clients With Mountain Health CO-OP

We recognize Mountain health insurance brokers are a key part of our success. We are the newest health insurance company in Idaho, Montana, and Wyoming, it is true. But we are backed by $75 million in reserves, and we are here to stay. We know your clients will appreciate having another, more affordable choice for their health insurance.

We Invite You to Become an Appointed Agent

Please call 855-447-2900 to learn more, or send us an email at

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Mountain Health CO-OP does not discriminate based on race, color, national origin, disability, age, sex, gender, sexual orientation, or health status in the administration of the plan, including enrollment and benefit determinations.


Contact Us with Questions About Coverage