NPI Portal NPI Lookup & Verification

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

Mrs. Mary Louise Meis, LCSW

Clinical Social Worker in Shelby, MT · enumerated 2006.

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

National Provider Identifier

1871566513

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Registry record

Entity type Individual (Type 1)
Name Mrs. Mary Louise Meis
Credential LCSW
Sex Female
Practice address Shelby, MT, 59474
Phone (406) 434-5276
Fax (406) 424-2714
Enumeration date Feb 13, 2006
Last updated in NPPES Nov 16, 2009

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 196 (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
0000500055 Medicaid MT -
800004269 Other MT RAILROAD MEDICARE
0000502996 Medicaid MT -
0000503048 Medicaid MT -
71180 Other MT BC/BS
LCSW#196 Other MT SOCIAL WORK LICENSE
0000503113 Medicaid MT -

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 Mary Meis practice?
The practice location on file with NPPES is in Shelby, MT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Meis?
The National Provider Identifier (NPI) for Mary Meis is 1871566513, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-16.