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

Werner Grentz, DO

Family Medicine Physician in London, KY · enumerated 2006.

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

National Provider Identifier

1801842653

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Registry record

Entity type Individual (Type 1)

Name Werner Grentz

Credential DO

Sex Male

Practice address London, KY, 40741

Phone (606) 864-0254

Fax (606) 864-0259

Enumeration date May 25, 2006

Last updated in NPPES Jun 4, 2009

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

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 02269 (KY) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 02269 (KY) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
3319534	Medicaid	TN	-
64022692	Medicaid	KY	-

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 Werner Grentz?

Werner Grentz is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-06-04.