Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Grace Johanna Mengwasser, LMSW

Social Worker in Jefferson City, MO · enumerated 2025.

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

National Provider Identifier

1891687018

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Registry record

Entity type Individual (Type 1)

Name Grace Johanna Mengwasser

Credential LMSW

Sex Female

Practice address 227 Metro Dr, Jefferson City, MO, 65109

Phone (844) 853-8937

Enumeration date Jul 21, 2025

Last updated in NPPES May 5, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 2025019930 (MO) Primary

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 Grace Mengwasser?

The National Provider Identifier (NPI) for Grace Mengwasser is 1891687018, a Type 1 (individual) record in the CMS NPPES registry.

Where does Grace Mengwasser practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-05.