Jonathan (Yoni) Neff

Primary specialty

Social WorkerTaxonomy code 104100000X

License

44SL07451500 Issued in NJ

Practice address

5 E 17TH St FL 2
New York, NY 10003-1949

Phone

(212) 989-2990

NPI assigned

Aug 12, 2025

Sex

Unspecified or another gender identity

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• The Fifth Avenue Counseling Center, Inc.

  • Community/Behavioral Health Agency
  • New York, NY
  • NPI 1801037270
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1754956800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780963200000",
    "number": "1326924754",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5 E 17TH ST FL 2",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100031949"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5 E 17TH ST FL 2",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100031949",
            "telephone_number": "212-989-2990"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "276 5th Ave Rm 604",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100014527",
            "country_code": "US",
            "telephone_number": "917-847-7556",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NEFF",
        "first_name": "JONATHAN (YONI)",
        "sole_proprietor": "YES",
        "sex": "X",
        "enumeration_date": "2025-08-12",
        "last_updated": "2026-06-09",
        "certification_date": "2026-06-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Social Worker",
            "state": "NY",
            "license": "131750",
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NJ",
            "license": "44SL07451500",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Abigail Neer
• Rishi Neeranjun, MD
• Neergaard Nyc Inc
• Alexis V Nees, MD
• Brian Thomas Neff
• Ryan Ashford Neff, MD, PHD
• Deborah Neft, PH.D.
• Lily Neftin, LMSW
• Yvette Negbaur, LCSW
• Jill Kathleen Neggia

• Social Worker in New York, NY
• Providers in New York, NY by specialty
• Social Worker in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.