Irwin Marc Lenefsky, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

R034085-1 Issued in NY

Practice address

1049 38TH St
Brooklyn, NY 11219-1012

Phone

(718) 877-0044

NPI assigned

Feb 5, 2006

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

Enrolled in NY

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 2004

Medicare assignment

May accept Medicare assignment

Telehealth

Offers telehealth services

Group practices

Metropolitan Community Services IncGroup PAC ID 0749549178, 2 clinicians

Brooklyn 38 LCSW PLLCGroup PAC ID 7113349481, 2 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

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.

• Brooklyn 38 LCSW PLLC

  • Clinical Child & Adolescent Psychologist
  • Brooklyn, NY
  • NPI 1639799216
  Medicare reassignment Care Compare group NPD Authorized official
• Metropolitan Community Services Inc

  • Substance Use Disorder Rehabilitation Clinic/Center
  • Brooklyn, NY
  • NPI 1326590993
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1139097600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759104000000",
    "number": "1811969751",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4089 OCEAN AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112353714",
            "telephone_number": "718-877-0044"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1049 38TH ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112191012",
            "telephone_number": "718-877-0044"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LENEFSKY",
        "first_name": "IRWIN",
        "middle_name": "MARC",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-02-05",
        "last_updated": "2025-09-29",
        "certification_date": "2025-09-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NY",
            "license": "R034085-1",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Oksana Lendel
• Ella Lenderman
• Nuphar Lendner
• Jennifer Lendore
• Adena Lenefsky
• Lauren Kennedy Lenehan, P.N.P., R.N.
• David Dennison Leng, MSW
• Melony Lenhardt, M.S.
• Lenik Dental PC
• Lenjen LLC

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.