1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Social Worker
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KATHERINE HARMONY STONE
NPI 1275351264
Social Worker in Los Angeles, CA

Active since September 30, 2024
2116 ARLINGTON AVE STE 100, LOS ANGELES, CA 90018(323) 334-9000 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 15, 2025, Sep 30, 2024 (2 updates tracked since 2024).

About Katherine Harmony Stone NPPES

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

KATHERINE HARMONY STONE (NPI 1275351264) is an individual social worker in Los Angeles, California, licensed in California (143349) and active in the NPI registry since September 2024.

NPPES Registry Identity

NPI1275351264
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameKATHERINE HARMONY STONE
Location Address2116 ARLINGTON AVE STE 100Los Angeles, CA 90018-1300
Mailing Address2116 Arlington Ave Ste 100Los Angeles, CA 90018-1300 · (323) 334-9000
Phone(323) 334-9000
Sole ProprietorNo
Enumeration DateSeptember 30, 2024
Last NPPES UpdateOctober 21, 20262 updates tracked since enumeration
NPPES CertifiedOctober 21, 2026
✔ NPI 1275351264 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in CA · 143349
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
2116 ARLINGTON AVE STE 100, Los Angeles, CA 90018
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

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

ANGELINE NICOLE LOCH LCSW
Social Worker (Clinical)
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
IRINA KIRAKOSIAN MA
Rehabilitation Practitioner
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
KERI STRATMAN
Rehabilitation Practitioner
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
EMILIO NUNEZ JR. RADT #R1514390723
Social Worker (Clinical)
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 294-4932
LEONELA MENDOZA A.S.
Case Manager/Care Coordinator
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
KIANA JANEL MATTHEWS ASW 93673
Social Worker (Clinical)
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
BAHAR NAWABI
Student in an Organized Health Care Education/Training Program
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000
AMANDA MARY CHAPMAN
Marriage & Family Therapist
2116 ARLINGTON AVE STE 100
LOS ANGELES, CA 90018
Los Angeles County (323) 334-9000

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 Katherine Stone's NPI number?

The NPI number for Katherine Stone is 1275351264. It was assigned to this individual provider in the NPPES registry on September 30, 2024.

Where is Katherine Stone located?

Katherine Stone practices at 2116 Arlington Ave Ste 100, Los Angeles, CA 90018. The listed phone number is (323) 334-9000.

What is Katherine Stone's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Katherine Stone was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.