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

MATTHEW KLAS
NPI 1306358213
Social Worker - Clinical in New York, NY

Active since November 01, 2017
450 7TH AVE STE 809, NEW YORK, NY 10123(212) 575-2622 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 6, 2026, Nov 1, 2017 (2 updates tracked since 2017).

About Matthew Klas NPPES

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

MATTHEW KLAS (NPI 1306358213) is an individual clinical provider in New York, New York, licensed in New York (095529-01) and active in the NPI registry since November 2017.

NPPES Registry Identity

NPI1306358213
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMATTHEW KLAS
Location Address450 7TH AVE STE 809New York, NY 10123-0805
Mailing Address450 7th Ave Ste 809New York, NY 10123-0805 · (212) 575-2622
Sole ProprietorNo
Enumeration DateNovember 1, 2017
Last NPPES UpdateJuly 6, 20262 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
NPI 1306358213 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 NY · 095529-01
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.

450 7TH AVE STE 809, New York, NY 10123

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 (Clinical)
450 7TH AVE STE 809
NEW YORK, NY 10123
Social Worker
450 7TH AVE STE 809
NEW YORK, NY 10123
Counselor (Mental Health)
450 7TH AVE STE 809
NEW YORK, NY 10123
Social Worker (Clinical)
450 7TH AVE STE 809
NEW YORK, NY 10123
Social Worker
450 7TH AVE STE 809
NEW YORK, NY 10123
Social Worker (Clinical)
450 7TH AVE STE 809
NEW YORK, NY 10123
Social Worker
450 7TH AVE STE 809
NEW YORK, NY 10123
Counselor (Mental Health)
450 7TH AVE STE 809
NEW YORK, NY 10123

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 Klas's NPI number?

The NPI number for Matthew Klas is 1306358213. It was assigned to this individual provider in the NPPES registry on November 1, 2017.

Where is Matthew Klas located?

Matthew Klas practices at 450 7th Ave Ste 809, New York, NY 10123. The listed phone number is (212) 575-2622.

What is Matthew Klas'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 Klas was last updated on July 6, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.