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Ann Brownback, LCSW

Clinical Social Worker in Libby, MT · enumerated 2006 · practices at Mavis Vaillancourt Lcsw Lac LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1376585737

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Registry record

Entity type Individual (Type 1)
Name Ann Brownback
Credential LCSW
Sex Female
Practice address 415 Louisiana Ave, Libby, MT, 59923
Phone (406) 293-4329
Fax (406) 293-5336
Enumeration date Jun 11, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 338LCSW (MT) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier Type State Issuer
0000502840 Medicaid MT -
000007076-1 Other MT BLUE CROSS BLUE SHIELD

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Ann Brownback?
Ann Brownback is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.