Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Katherine Grace Warner, RDH

Dental Hygienist in Kalamazoo, MI · enumerated 2019.

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

National Provider Identifier

1285273953

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Registry record

Entity type Individual (Type 1)

Name Mrs. Katherine Grace Warner

Credential RDH

Sex Female

Practice address 505 E Alcott St, Kalamazoo, MI, 49001

Phone (269) 349-2641

Enumeration date Dec 30, 2019

Last updated in NPPES Dec 30, 2019

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 2902017640 (MI) 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Katherine Warner?

Katherine Warner is registered in NPPES with the primary taxonomy of Dental Hygienist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-30.