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

MS. MARIAH CLEMENT GALLAGHER LCSW
NPI 1760859102
Social Worker - Clinical in Philadelphia, PA

Active since September 01, 2015
2021 ARCH ST, PHILADELPHIA, PA 19103(215) 645-2684 Get Directions Write a Review

NPPES record last updated: September 18, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 18, 2026, Oct 8, 2018, Oct 3, 2018 (3 updates tracked since 2018).

About Ms. Mariah Clement Gallagher Lcsw NPPES

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

MS. MARIAH CLEMENT GALLAGHER LCSW (NPI 1760859102) is an individual clinical provider in Philadelphia, Pennsylvania, licensed in New York (082641-1) and active in the NPI registry since September 2015.

NPPES Registry Identity

NPI1760859102
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. MARIAH CLEMENT GALLAGHERCredential: LCSW
Location Address2021 ARCH STPhiladelphia, PA 19103-1401
Mailing Address2021 Arch StPhiladelphia, PA 19103-1401 · (215) 645-2684
Sole ProprietorYes
Enumeration DateSeptember 1, 2015
Last NPPES UpdateSeptember 18, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2026
✔ NPI 1760859102 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NY · 082641-1
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.
Also ListedSocial WorkerTaxonomy 104100000X · License 084274-1 (NY)
2021 ARCH ST, Philadelphia, PA 19103

Other Providers at the Same Location NPPES 4

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

Counselor (Professional)
2021 ARCH ST
PHILADELPHIA, PA 19103
Psychologist
2021 ARCH ST
PHILADELPHIA, PA 19103
Clinic/Center (Adult Mental Health)
2021 ARCH ST
PHILADELPHIA, PA 19103
Clinic/Center (Mental Health (Including Community Mental Health Center))
2021 ARCH ST
PHILADELPHIA, PA 19103

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 Mariah Gallagher's NPI number?

The NPI number for Mariah Gallagher is 1760859102. It was assigned to this individual provider in the NPPES registry on September 1, 2015.

Where is Mariah Gallagher located?

Mariah Gallagher practices at 2021 Arch St, Philadelphia, PA 19103. The listed phone number is (215) 645-2684.

What is Mariah Gallagher'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 Mariah Gallagher 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 16 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.