JONATHAN (YONI) NEFF
NPI 1326924754
Social Worker in New York, NY

Q: What is the provider's specialty?

The provider's specialty is Social Worker with taxonomy code 104100000X.

Active since August 12, 2025

5 E 17TH ST FL 2, NEW YORK, NY 10003(212) 989-2990 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: May 27, 2026, Aug 12, 2025 (2 updates tracked since 2025).

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About Jonathan (yoni) Neff NPPES

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

JONATHAN (YONI) NEFF (NPI 1326924754) is an individual social worker in New York, New York, licensed in New Jersey (44SL07451500) and active in the NPI registry since August 2025. The provider maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1326924754

Entity TypeIndividual

Primary Taxonomy104100000X

Provider Legal NameJONATHAN (YONI) NEFF

Location Address5 E 17TH ST FL 2New York, NY 10003-1949

Mailing Address5 E 17th St Fl 2New York, NY 10003-1949

Phone(212) 989-2990

Sole ProprietorYes

Enumeration DateAugust 12, 2025

Last NPPES UpdateJune 9, 20262 updates tracked since enumeration

NPPES CertifiedJune 9, 2026

✔ NPI 1326924754 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers

Taxonomy Code104100000X

Licenses✔ Licensed in NJ · 44SL07451500✔ Licensed in NY · 131750

Definition

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

5 E 17TH ST FL 2, New York, NY 10003

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Secondary Practice Location 1

Location 1276 5th Ave Rm 604New York, NY 10001-4527 · Phone (917) 847-7556

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP