MissoulaAllegiance Benefit Plan Management, Inc. (Allegiance) is very proud to provide administrative services to the Montana University System (MUS) Allegiance Administered Medical Plan. We have a dedicated service team and will provide you with the excellent service that Allegiance is known for throughout the United States.

Montana University System is a self-insured plan. The Office of the Commissioner of Higher Education, with the advice of the Inter Unit Benefits Committee (IUBC), will continue to design the benefits and maintain fiduciary responsibilities, as well as coordinate communications with the benefits representatives of the Montana University System.


For assistance regarding a claim or to pre-notify for medical services, please call the MUS Customer Service number at 1-877-778-8600. To find a network provider in your area, click on “Provider Search” link on the top of this screen.