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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. SAMUEL JOHN GALLAGHER-STEVENS
NPI 1962870519
Community Based Residential Treatment Facility, Mental Illness in San Mateo, CA

Active since September 11, 2015
411 BOREL AVE, SAN MATEO, CA 94402(650) 393-8922 Get Directions Write a Review

NPPES record last updated: September 18, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 18, 2026, Dec 15, 2016 (2 updates tracked since 2016).

About Mr. Samuel John Gallagher-stevens NPPES

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

MR. SAMUEL JOHN GALLAGHER-STEVENS (NPI 1962870519) is an individual community based residential treatment facility, mental illness provider in San Mateo, California and active in the NPI registry since September 2015.

NPPES Registry Identity

NPI1962870519
Entity TypeIndividualMale
Primary Taxonomy320800000X
Provider Legal NameMR. SAMUEL JOHN GALLAGHER-STEVENS
Location Address411 BOREL AVESan Mateo, CA 94402-3522
Mailing Address1410 Marshall StreetSan Mateo, CA 94401
Phone(650) 393-8922
Sole ProprietorNo
Enumeration DateSeptember 11, 2015
Last NPPES UpdateSeptember 18, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2026
✔ NPI 1962870519 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyCommunity Based Residential Treatment Facility, Mental IllnessResidential Treatment Facilities
Taxonomy Code320800000X
Definition
A home-like residential facility providing psychiatric treatment and psycho/social rehabilitative services to individuals diagnosed with mental illness.
Also ListedCounselorTaxonomy 101Y00000X
Also ListedCommunity Health WorkerTaxonomy 172V00000X
411 BOREL AVE, San Mateo, CA 94402
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Other Providers at the Same Location NPPES

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

MELISSA MARIE ARCEO
Community Health Worker
411 BOREL AVE
SAN MATEO, CA 94402
San Mateo County (650) 393-8908

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 Samuel Gallagher-stevens's NPI number?

The NPI number for Samuel Gallagher-stevens is 1962870519. It was assigned to this individual provider in the NPPES registry on September 11, 2015.

Where is Samuel Gallagher-stevens located?

Samuel Gallagher-stevens practices at 411 Borel Ave, San Mateo, CA 94402. The listed phone number is (650) 393-8922.

What is Samuel Gallagher-stevens's specialty?

The primary specialty registered for this NPI is Community Based Residential Treatment Facility, Mental Illness with taxonomy code 320800000X.

When was this NPI record last updated?

The NPPES record for Samuel Gallagher-stevens was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.