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Mental Health Services Plan
Reference Numbers

I. Eligibility

Call your local mental health center.

Main Offices:

Eastern Montana Mental Health Center
Miles City -- (406) 234-0234

South Central Regional Mental Health Center
Billings -- (406) 252-5658

Center for Mental Health
Great Falls -- (406) 771-8648

Western Montana Mental Health Center
Missoula -- (406) 532-8400

Eligibility Verification

ACS Provider Relations
(406) 442-1837 or (800) 624-3958
Automated Voice Response – (800) 714-0060
FAXBACK -- (406) 442-1837 or (800) 624-3958

II. General Information

Mental Health Services Bureau
(406) 444-3964 or (800) 866-0328

III. Provider Information

Provider Enrollment

ACS Provider Relations
(406) 442-1837 or (800) 624-3958

Claims Processing

ACS Provider Relations
(406) 442-1837 or (800) 624-3958