State of Montana

Welcome to Allegiance Benefit Plan Management (Allegiance). The State of Montana has contracted with Allegiance for services including medical claims processing, cost-saving provider contracts, and case management for its self-funded benefit plan. Allegiance is here to answer your questions about medical benefits and claims, case management, and more. We have a dedicated service team committed to processing claims efficiently and correctly so that you can focus on your well-being.

For assistance regarding a claim or to pre-notify for medical services, please call the State of Montana Customer Service number at 1-855-999-1057. To find a network provider in your area, click on “Find A Doctor /Provider Search” link on the top of this screen.