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Dr. John William Warner, M.D.

Urology Physician in Winchester, VA · enumerated 2006.

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

National Provider Identifier

1881795821

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Registry record

Entity type Individual (Type 1)
Name Dr. John William Warner
Credential M.D.
Sex Male
Practice address 1712 Amherst St, Winchester, VA, 22601
Phone (540) 667-1712
Fax (540) 665-0045
Enumeration date Sep 25, 2006
Last updated in NPPES Mar 3, 2025

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 0101236167 (VA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
010092663 Medicaid VA -

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 John Warner?
John Warner is registered in NPPES with the primary taxonomy of Urology Physician. 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 2025-03-03.