MR. JOHN L. JEFFERSON
NPI 1801228549
Counselor - Mental Health in Hawthorne, CA

Active since August 05, 2013
4951 W 119TH PL, HAWTHORNE, CA 90250(310) 612-3778(310) 676-1170 Get Directions Write a Review

NPPES record last updated: October 18, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Oct 18, 2022, Sep 14, 2022 (2 updates tracked since 2022).

About Mr. John L. Jefferson NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. JOHN L. JEFFERSON (NPI 1801228549) is an individual mental health provider in Hawthorne, California and active in the NPI registry since August 2013.

NPPES Registry Identity

NPI1801228549
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameMR. JOHN L. JEFFERSON
Location Address4951 W 119TH PLHawthorne, CA 90250-2722
Mailing Address4951 W 119th PlHawthorne, CA 90250-2722 · (310) 612-3778 · Fax (310) 676-1170
Fax(310) 676-1170
Sole ProprietorYes
Enumeration DateAugust 5, 2013
Last NPPES UpdateOctober 18, 20222 updates tracked since enumeration
NPPES CertifiedOctober 18, 2022
NPI 1801228549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
4951 W 119TH PL, Hawthorne, CA 90250

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Counselor (Addiction (Substance Use Disorder))
4951 W 119TH PL
HAWTHORNE, CA 90250

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Jefferson's NPI number?

The NPI number for John Jefferson is 1801228549. It was assigned to this individual provider in the NPPES registry on August 5, 2013.

Where is John Jefferson located?

John Jefferson practices at 4951 W 119th Pl, Hawthorne, CA 90250. The listed phone number is (310) 612-3778.

What is John Jefferson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for John Jefferson was last updated on October 18, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.