GMC Insurance Managers/Allegiance Benefit Plan
Allegiance Benefit Plan Management, Inc.
2806 South Garfield StreetP.O. Box 3018
Missoula, MT 59806-3018
Phone: 406-721-2222
Toll Free Phone Number: 1-800-877-1122
Fax: 406-721-2252
Email: Inquire@askallegiance.com
Website Address: www.abpmtpa.com
Claim form is available on the above Allegiance Benefit Plan Website under Members, Forms, Health Claim Forms and click on the Domestic/International Claim Form
Health/Flex Information
To sign up for your password for online access to all of your health/flex informationLog onto www.abpmtpa.com/online_services.php
Log onto Click on Employee Login
Enter Group Number 1000137
Click on Register New User (you will be asked for a username and email address)
You should receive your temporary password within a few days by mail
