On Site Physician Services, PC
On Site Physician Services, PC is a healthcare organization registered as Family Medicine Physician in Commerce, CA, holding Type 2 (organization) NPI 1881178358 since 2018. The authorized official on file is Brian Wilbur, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1881178358 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | On Site Physician Services, PC |
| Practice address | 6131 TELEGRAPH ROAD, Commerce, CA, 90040 |
| Phone | 3237212100 |
| Fax | 8157595202 |
| Enumeration date | 2018-09-20 |
| Last updated in NPPES | 2018-09-20 |
Authorized official
| Name | Brian Wilbur |
|---|---|
| Title | President |
| Phone | 2138403181 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207Q00000X | Family Medicine Physician | Primary | — | — |
Copy-ready billing details
Provider: On Site Physician Services, PC NPI: 1881178358 Taxonomy: 207Q00000X (Family Medicine Physician) Address: 6131 TELEGRAPH ROAD, Commerce, CA, 90040
Verify this record
Cross-check NPI 1881178358 against the authoritative CMS record: view On Site Physician Services, PC 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
What is a Type 2 NPI?
What type of organization is On Site Physician Services, PC?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-09-20.