Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Diana Lee Mills, R.D.H.

Dental Hygienist in Tinker Afb, OK · enumerated 2005.

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

National Provider Identifier

1205817665

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Registry record

Entity type Individual (Type 1)

Name Mrs. Diana Lee Mills

Credential R.D.H.

Sex Female

Practice address 5700 Arnold St, Tinker Afb, OK, 73145

Phone (405) 736-2000

Enumeration date Nov 10, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 799 (OK) 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 Diana Mills?

Diana Mills 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 2007-07-08.