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

Heather Mattheis

Social Worker in Bismarck, ND · enumerated 2016.

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

National Provider Identifier

1841651981

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Registry record

Entity type Individual (Type 1)
Name Heather Mattheis
Sex Female
Practice address Bismarck, ND, 58504
Phone (701) 751-0384
Enumeration date Mar 17, 2016
Last updated in NPPES Mar 17, 2016

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 3934 (ND) Primary

Other identifiers

Identifier Type State Issuer
1528309846 Medicaid ND -

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

Where does Heather Mattheis practice?
The practice location on file with NPPES is in Bismarck, ND. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Heather Mattheis?
The National Provider Identifier (NPI) for Heather Mattheis is 1841651981, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-17.