Dr. John William Warner, M.D.
Dr. John William Warner is a Urology Physician provider (Urology) practicing in Winchester, VA, registered in the NPPES registry with NPI 1881795821 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1881795821 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John William Warner |
| Credential | M.D. |
| Sex | Male |
| Practice address | 1712 AMHERST ST, Winchester, VA, 22601 |
| Phone | 5406671712 |
| Fax | 5406650045 |
| Enumeration date | 2006-09-25 |
| Last updated in NPPES | 2025-03-03 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208800000X | Urology Physician | Primary | 0101236167 | VA |
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 | — |
Copy-ready billing details
Provider: John Warner, M.D. NPI: 1881795821 Taxonomy: 208800000X (Urology Physician) Address: 1712 AMHERST ST, Winchester, VA, 22601
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1316048333 | Nicolas Restrepo | Individual | Urology Physician | Winchester, VA |
| 1689775611 | Mark Levinson | Individual | Urology Physician | Winchester, VA |
| 1679674790 | Raymond Hillyard | Individual | Urology Physician | Winchester, VA |
| 1902907942 | Michael Hoffman | Individual | Urology Physician | Winchester, VA |
| 1801997838 | Thomas Oliver | Individual | Urology Physician | Winchester, VA |
| 1831290451 | Urology Clinic of Winchester, P.C. | Organization | Urology Physician | Winchester, VA |
| 1558575191 | Michelle D'Alessio | Individual | Physician Assistant | Winchester, VA |
| 1154648764 | Megan Bing | Individual | Urology Physician | Winchester, VA |
Verify this record
Cross-check NPI 1881795821 against the authoritative CMS record: view Dr. John William Warner on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-03-03.