Nicholas Leth

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

149.029100 Issued in IL

Practice address

1028 Randolph St
Oak Park, IL 60302-5514

Phone

(708) 263-5279

NPI assigned

Jan 14, 2026

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

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.

Specialty

Clinical Social Worker

Education

Other, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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.

• Nickknacks Wellness Services

  • Clinical Social Worker
  • Oak Park, IL
  • NPI 1194659664
  NPD Authorized official

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

{
    "created_epoch": "1768348800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768348800000",
    "number": "1851259147",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1028 RANDOLPH ST",
            "city": "OAK PARK",
            "state": "IL",
            "postal_code": "603025514",
            "telephone_number": "708-263-5279"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1028 RANDOLPH ST",
            "city": "OAK PARK",
            "state": "IL",
            "postal_code": "603025514",
            "telephone_number": "708-263-5279"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LETH",
        "first_name": "NICHOLAS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2026-01-14",
        "last_updated": "2026-01-14",
        "certification_date": "2026-01-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Social Worker, Clinical",
            "state": "IL",
            "license": "149.029100",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura L Lerner, PHD
• Lescher Village Eye Physicians, S.C.
• Louis Richard Lessor, ACSW LCSW BOARD CERT
• Suzanne Marie Letang, LCPC
• Susan Letendre, OTR/L
• Baroukh E. Levi, M.D.
• Tamar A Levinson, PSY.D.
• Christine L Levy, LCSW
• Naomi A Levy, M.D.
• Ashley Lewis, PROF. COUNSELOR

• Clinical Social Worker in Oak Park, IL
• Providers in Oak Park, IL by specialty
• Clinical Social Worker in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 14, 2026; 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.