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

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: August 16, 2026.

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

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

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.

PIERRE DULEYRIE
Counselor (Mental Health)
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
ALYSA HARDER AIN
Counselor (Mental Health)
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
KAYLEY MONN
Student in an Organized Health Care Education/Training Program
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (902) 129-8929
EVANGELINE WONG
Social Worker
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
SARAH ELIZABETH HUGHES
Student in an Organized Health Care Education/Training Program
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
SAIRA MADARASMI
Student in an Organized Health Care Education/Training Program
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
ALEXANDRA TIGER
Social Worker
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990
GAVIN ZINZELL
Student in an Organized Health Care Education/Training Program
5 E 17TH ST FL 2
NEW YORK, NY 10003
New York County (212) 989-2990

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 Jonathan (yoni) Neff's NPI number?

The NPI number for Jonathan (yoni) Neff is 1326924754. It was assigned to this individual provider in the NPPES registry on August 12, 2025.

Where is Jonathan (yoni) Neff located?

Jonathan (yoni) Neff practices at 5 E 17th St Fl 2, New York, NY 10003. The listed phone number is (212) 989-2990.

What is Jonathan (yoni) Neff's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Jonathan (yoni) Neff was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.