Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Constance Andvik, S.W.

Social Worker in Poplar, MT · enumerated 2006.

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

National Provider Identifier

1144320888

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Registry record

Entity type Individual (Type 1)

Name Constance Andvik

Credential S.W.

Sex Female

Practice address 107 H. St. East, 550 6th Ave. No., Poplar, MT, 59255

Phone (406) 768-3491

Fax (406) 768-3423

Enumeration date Sep 23, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 242 (MT) Primary

Other identifiers

Identifier	Type	State	Issuer
2210068	Medicaid	MT	-
242	Other	MT	MT. ST. BOARD

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

What is the NPI number for Constance Andvik?

The National Provider Identifier (NPI) for Constance Andvik is 1144320888, a Type 1 (individual) record in the CMS NPPES registry.

Where does Constance Andvik practice?

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

Other providers at this practice address

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