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Forms & Documents
Medicare Supplement Forms
Medicare Contact Info

Medicare Supplement Contact information​

Questions related to applications submitted, underwriting, commission inquiries, and active member inquiries:

Medicare Supplement Administrative Office
P.O. Box 2209
Duncan, OK

Telephone: 800-366-8354

Email: [email protected]

The contact information is also on our various documents associated with our products.


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:
[email protected]


Delight Your Clients With Mountain Health CO-OP

We recognize Mountain Health CO-OP 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.

To Learn More: 855-447-2900
[email protected]

Become an Appointed Agent

No Surprises Act-Disclosure Requirements

Agent & Broker Compensation Disclosures

As you may know, the recently enacted No Surprises Act mandates that each health insurance broker disclose, to potential and existing customers, the direct compensation that the health insurance broker receives from a health insurance company. The disclosure is required before an individual customer finalizes their plan selection. For more information about what is required or to access the disclosure document, please see the documents attached below.