Allegiance Benefit Plan Management Inc.
Customer service, prior authorization and claims processing 1-877-778-8600
Precertification 1-800-342-6510. The following forms can assist you:
Allegiance
PO Box 4786
Missoula, MT 59801
Blue Cross/Blue Shield of Montana
1-800-447-7828
The following forms can assist you.
Member Services
560 North Park Ave
PO Box 4309
Helena, Mt 59604-4309
New West Health Services
Customer Service: 1-800-290-3657
Fax: 406-257-2600
Pre-Authorization: 1-800-290-5453
Fax: 406-457-2298
The following forms can assist you:
New West
130 Neill Avenue
Helena, MT 59601