Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MR. KEITH ROBERT ARMSTRONG LCSW
NPI 1659315604
Social Worker - Clinical in San Francisco, CA

Active since June 16, 2006
4150 CLEMENT ST, SAN FRANCISCO, CA 94121(415) 750-2190 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mr. Keith Robert Armstrong Lcsw NPPES

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

MR. KEITH ROBERT ARMSTRONG LCSW (NPI 1659315604) is an individual clinical provider in San Francisco, California, licensed in California (LCS12962) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1659315604
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. KEITH ROBERT ARMSTRONGCredential: LCSW
Location Address4150 CLEMENT STSan Francisco, CA 94121-1545
Mailing Address4150 Clement StSan Francisco, CA 94121-1545 · (415) 750-2190
Sole ProprietorNo
Enumeration DateJune 16, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1659315604 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in CA · LCS12962
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
4150 CLEMENT ST, San Francisco, CA 94121

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.

Social Worker
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Student in an Organized Health Care Education/Training Program
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Pharmacist
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Pharmacist
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Respiratory Therapist, Registered
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Family)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Social Worker (Clinical)
4150 CLEMENT ST, SOCIAL WORK SERVICES-122
SAN FRANCISCO, CA 94121
Pharmacist
4150 CLEMENT ST, INPATIENT PHARMACY
SAN FRANCISCO, CA 94121

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 Keith Armstrong's NPI number?

The NPI number for Keith Armstrong is 1659315604. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Where is Keith Armstrong located?

Keith Armstrong practices at 4150 Clement St, San Francisco, CA 94121. The listed phone number is (415) 750-2190.

What is Keith Armstrong's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Keith Armstrong was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.