Mr. William Eugene Treaster Jr.
Mr. William Eugene Treaster Jr. is a Community Health Worker provider (Community Health Worker) practicing in Commerce, CA, registered in the NPPES registry with NPI 1811123771 since 2009.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1811123771 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. William Eugene Treaster Jr. |
| Sex | Male |
| Practice address | Commerce, CA, 90040 |
| Phone | 3233460960 |
| Enumeration date | 2009-06-05 |
| Last updated in NPPES | 2009-06-05 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 172V00000X | Community Health Worker | Primary | — | — |
Copy-ready billing details
Provider: William Treaster NPI: 1811123771 Taxonomy: 172V00000X (Community Health Worker) Address: Commerce, CA, 90040
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1295851921 | Karla Mclean | Individual | Rehabilitation Practitioner | Commerce, CA |
| 1770601023 | Marilyn Pelletier | Individual | Rehabilitation Practitioner | Commerce, CA |
| 1578681847 | Judy Wren | Individual | Rehabilitation Practitioner | Los Angeles, CA |
| 1487772679 | Estella Rios | Individual | Rehabilitation Practitioner | Los Angeles, CA |
| 1255459442 | Deborrah Rogers | Individual | Assistive Technology Practitioner Rehabilitation Counselor | Los Angeles, CA |
| 1407974736 | Rosalie Ochoa | Individual | Rehabilitation Practitioner | Commerce, CA |
| 1265550594 | Carolyn Palmer | Individual | Rehabilitation Practitioner | Commerce, CA |
| 1417075755 | Debbie Parthemore | Individual | Rehabilitation Practitioner | Commerce, CA |
Verify this record
Cross-check NPI 1811123771 against the authoritative CMS record: view Mr. William Eugene Treaster Jr. 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 2009-06-05.