Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. John L. Jefferson

Individual provider Mental Health Counselor · NPI 1801228549

Mr. John L. Jefferson is a Mental Health Counselor in Hawthorne, California. Practices as a sole proprietor. Registered with an NPI since 2013.

In the registry since
2013

Practice location Address checks out

4951 W 119th Pl
Hawthorne, CA 90250-2722
Phone: (310) 612-3778
Fax: (310) 676-1170
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1801228549
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedAugust 5, 2013
Last updated in NPPESOctober 18, 2022
Certification dateOctober 18, 2022
Mailing address4951 W 119th Pl, Hawthorne, CA 90250-2722

Other providers in Hawthorne