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JASON MARX LCSW
NPI 1194379131
Social Worker - Clinical in New York, NY

Active since July 29, 2019Opted out of Medicare · through Dec 6, 2027
240 MADISON AVE # 10K, NEW YORK, NY 10016(347) 632-8356 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Sep 12, 2024, Jul 20, 2023, Jul 29, 2019 (3 updates tracked since 2019).

About Jason Marx Lcsw NPPES

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

JASON MARX LCSW (NPI 1194379131) is an individual clinical provider in New York, New York and active in the NPI registry since July 2019. He has opted out of Medicare through December 6, 2027.

NPPES Registry Identity

NPI1194379131
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJASON MARXCredential: LCSW
Location Address240 MADISON AVE # 10KNew York, NY 10016-2820
Mailing Address240 Madison Ave # 10kNew York, NY 10016-2820
Phone(347) 632-8356
Sole ProprietorNo
Enumeration DateJuly 29, 2019
Last NPPES UpdateSeptember 29, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 29, 2025
✔ NPI 1194379131 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
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 ListedPsychologistTaxonomy 103T00000X · License PSB94028650 (CA)
240 MADISON AVE # 10K, New York, NY 10016
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Jason Marx Lcsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from December 6, 2023 through December 6, 2027.

Opt-Out Effective DateDecember 6, 2023
Opt-Out In Effect ThroughDecember 6, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES

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

VICTORIA ELISE FARES MSW
Social Worker
240 MADISON AVE # 10K
NEW YORK, NY 10016
New York County (646) 875-8581

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 Jason Marx's NPI number?

The NPI number for Jason Marx is 1194379131. It was assigned to this individual provider in the NPPES registry on July 29, 2019.

Where is Jason Marx located?

Jason Marx practices at 240 Madison Ave # 10K, New York, NY 10016. The listed phone number is (347) 632-8356.

What is Jason Marx's specialty?

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

Is Jason Marx enrolled in Medicare?

No. Jason Marx has opted out of Medicare through December 6, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Jason Marx was last updated on September 29, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.