Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William R Polhamus, P.A.
Physician Assistant in Midlothian, VA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1629011226
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0536798 | Other | VA | AETNA HMO |
| 287174 | Other | VA | SOUTHERN HEALTH |
| 540885859 | Other | VA | CIGNA |
| 540885859 | Other | VA | CORVEL |
| 008947104 | Medicaid | VA | - |
| 540885859 | Other | VA | C&O EMPLOYEE'S HEALTHCARE |
| 540885859 | Other | VA | FIRST HEALTH/CCN |
| 0900325 | Other | VA | UNITED HEALTHCARE |
| 31213 | Other | VA | SH CARENET |
| 540885859 | Other | VA | MULTIPLAN |
| 100679 | Other | VA | ANTHEM HEALTHKEEPERS |
| 540885859 | Other | VA | PRIVATE HEALTHCARE SYSTEM |
| 540885859 | Other | VA | FOCUS |
| 540885859 | Other | VA | COMPMANAGEMENT |
| 540885859 | Other | VA | VIRGINIA HEALTH NETWORK |
| P00011038 | Other | VA | RAILROAD MEDICARE |
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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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-08.