Mr. John L. Jefferson
Mr. John L. Jefferson is a Mental Health Counselor provider (Counselor) practicing in Hawthorne, CA, registered in the NPPES registry with NPI 1801228549 since 2013.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1801228549 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. John L. Jefferson |
| Sex | Male |
| Practice address | Hawthorne, CA, 90250 |
| Phone | 3106123778 |
| Fax | 3106761170 |
| Enumeration date | 2013-08-05 |
| Last updated in NPPES | 2022-10-18 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor | Primary | — | — |
Copy-ready billing details
Provider: John Jefferson NPI: 1801228549 Taxonomy: 101YM0800X (Mental Health Counselor) Address: Hawthorne, CA, 90250
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1891541389 | Rickey Hodges | Individual | Addiction (Substance Use Disorder) Counselor | Hawthorne, CA |
Verify this record
Cross-check NPI 1801228549 against the authoritative CMS record: view Mr. John L. Jefferson 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
Where does John Jefferson practice?
What is the NPI number for John Jefferson?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-10-18.