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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

Page last updated: 07/17/2007