Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Anna Melissa Olsonoski, LCSW

Clinical Social Worker in Missoula, MT · enumerated 2021 · practices at Northern Pines Counseling.

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

National Provider Identifier

1831780345

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Registry record

Entity type Individual (Type 1)

Name Anna Melissa Olsonoski

Credential LCSW

Sex Female

Practice address Missoula, MT, 59804

Phone (952) 356-2901

Enumeration date Jan 27, 2021

Last updated in NPPES Sep 11, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License BBH-LCSW-LIC-48162 (MT) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Anna Olsonoski practice?

The practice location on file with NPPES is in Missoula, MT. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Anna Olsonoski?

The National Provider Identifier (NPI) for Anna Olsonoski is 1831780345, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Northern Pines Counseling Clinical Social Worker · Missoula, MT NPI 1184393191

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-11.