Leon Gussow, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Practice address

1740 W Taylor St
Dept 3466
Chicago, IL 60612-7232

Phone

(312) 704-2885

Fax

(312) 704-2737

NPI assigned

Jan 19, 2007

Sex

Male

Sole proprietor

No

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)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1169164800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1265585863",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "710 W BUENA AVE",
            "address_2": "# 2W",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606132222",
            "telephone_number": "773-935-3746",
            "fax_number": "773-935-3746"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1740 W TAYLOR ST",
            "address_2": "DEPT 3466",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606127232",
            "telephone_number": "312-704-2885",
            "fax_number": "312-704-2737"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUSSOW",
        "first_name": "LEON",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-19",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IL",
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amanda Gurtler, LMT
• Kapil Gururangan, MD
• Joe Guse, LCPC
• Georg Gussak, MD, MSC
• Elizabeth Gussis
• Madeleine Joanna Gust, M.D.
• Brittney N Gusta
• Alyssa Nicole Gustafson, SLP-CFY
• Andrew A Gustafson, MD
• Dawn M Gustafson, PT

• Internal Medicine Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.