Matthew Elliot Nitzberg, LMSW

Primary specialty

Social WorkerTaxonomy code 104100000X

License

129858 Issued in NY

Practice address

33 W 60TH St FL 4
New York, NY 10023-7905

Phone

(212) 333-3444

Fax

(212) 333-5444

NPI assigned

Jul 3, 2024

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

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.

• Institute for Contemporary Psychotherapy

  • Clinic/Center
  • New York, NY
  • NPI 1639221476
  NPD
• Comprehensive Counseling LCSW, PLLC

  • Clinical Social Worker
  • Bayside, NY
  • NPI 1982798773

  Mental Health

  NPD (past)

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

{
    "created_epoch": "1719964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780444800000",
    "number": "1669218194",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1661 SUMMERFIELD ST APT PHE",
            "city": "RIDGEWOOD",
            "state": "NY",
            "postal_code": "113853384",
            "telephone_number": "408-204-9531"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "33 W 60TH ST FL 4",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100237905",
            "telephone_number": "212-333-3444",
            "fax_number": "212-333-5444"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3635 Bell Blvd Ste 203",
            "address_purpose": "LOCATION",
            "city": "Bayside",
            "state": "NY",
            "postal_code": "113612097",
            "country_code": "US",
            "telephone_number": "718-504-9256",
            "fax_number": "718-830-9088",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NITZBERG",
        "first_name": "MATTHEW",
        "middle_name": "ELLIOT",
        "credential": "LMSW",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2024-07-03",
        "last_updated": "2026-06-03",
        "certification_date": "2026-06-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NY",
            "license": "129858",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rebecca Nitschelm
• Bryan Joel Villanueva Nitural, DPT
• Andrew Nitz, PA-C
• Charlotte Nitz
• Emily Paige Nitzberg
• George Coolidge Nitzburg, PHD
• Cindy M Niu, MD
• Cory Niu
• Helen Niu
• Yunchao Niu, AGNP

• 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 3, 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.