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MATTHEW SOSNOWSKY
NPI 1376806208
Social Worker - Clinical in Philadelphia, PA

Active since June 15, 2012
148 N 3RD ST, PHILADELPHIA, PA 19106(610) 217-7955 Get Directions Write a Review

NPPES record last updated: September 28, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 28, 2021, Oct 1, 2020 (2 updates tracked since 2020).

About Matthew Sosnowsky NPPES

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

MATTHEW SOSNOWSKY (NPI 1376806208) is an individual clinical provider in Philadelphia, Pennsylvania, licensed in District Of Columbia (LC50080383) and active in the NPI registry since June 2012. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1376806208
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMATTHEW SOSNOWSKY
Location Address148 N 3RD STPhiladelphia, PA 19106-1733
Mailing AddressPo Box 40333, 615 Chestnut StPhiladelphia, PA 19106-0333 · (610) 217-7955
Phone(610) 217-7955
Sole ProprietorNo
Enumeration DateJune 15, 2012
Last NPPES UpdateSeptember 28, 20212 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2021
✔ NPI 1376806208 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 DC · LC50080383
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 18136 (MD)
148 N 3RD ST, Philadelphia, PA 19106
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Secondary Practice Locations 2

Location 12929 Connecticut Ave NW Apt 406Washington, DC 20008-1419 · Phone (610) 217-7955
Location 27474 Greenway Center Dr, Suite 730Greenbelt, MD 20770-3504 · Phone (301) 345-1022

Other Providers at the Same Location NPPES

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

MATT SOSNOWSKY, PLLC
Social Worker (Clinical)
148 N 3RD ST
PHILADELPHIA, PA 19106
Philadelphia County (610) 217-7955

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 Matthew Sosnowsky's NPI number?

The NPI number for Matthew Sosnowsky is 1376806208. It was assigned to this individual provider in the NPPES registry on June 15, 2012.

Where is Matthew Sosnowsky located?

Matthew Sosnowsky practices at 148 N 3rd St, Philadelphia, PA 19106. The listed phone number is (610) 217-7955.

What is Matthew Sosnowsky'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 Matthew Sosnowsky was last updated on September 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.