Duncan James Grant

Primary specialty

Behavior TechnicianTaxonomy code 106S00000X

Practice address

3319 N Elston Ave
Chicago, IL 60618-5811

Phone

(088) 331-2733

NPI assigned

Mar 31, 2025

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

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

{
    "created_epoch": "1743379200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743465600000",
    "number": "1437952678",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1409 W CARROLL AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606071105",
            "telephone_number": "088-331-2773"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3319 N ELSTON AVE",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606185811",
            "telephone_number": "088-331-2733"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRANT",
        "first_name": "DUNCAN",
        "middle_name": "JAMES",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-03-31",
        "last_updated": "2025-04-01",
        "certification_date": "2025-04-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106S00000X",
            "taxonomy_group": "",
            "desc": "Behavior Technician",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alessandra Adora Grant, LSW
• Carolyn Elizabeth Grant, AGACNP
• Carrie A Grant, PMHNP
• Christopher Werner Grant, M.D.
• Dianna Grant, M.D.
• Elizabeth Grant, MS
• Erica Grant
• Ian Michael Grant, M.D.
• Jon Grant
• Joseph Grant, LCSW

• Behavior Technician in Chicago, IL
• Providers in Chicago, IL by specialty
• Behavior Technician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 1, 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.