Duncan James Williams, DO

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

DO4122 Issued in NV

Practice address

3186 S Maryland Pkwy
Las Vegas, NV 89109-2306

Phone

(702) 961-5000

NPI assigned

Mar 20, 2023

Last updated

Jul 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Enrolled in AZ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Emergency Medicine

Education

Arizona College of Osteopathic Medicine Mid Western University, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784160000000",
    "number": "1225730781",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4637 CHABOT DR STE 104",
            "city": "PLEASANTON",
            "state": "CA",
            "postal_code": "945882749",
            "telephone_number": "925-924-1600"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3186 S MARYLAND PKWY",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891092306",
            "telephone_number": "702-961-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "DUNCAN",
        "middle_name": "JAMES",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-07-16",
        "certification_date": "2026-07-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "AZ",
            "license": "012254",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NV",
            "license": "DO4122",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Donyale Williams
• Dora Williams
• Dorrease M Williams
• Dorsereese Denise Williams
• Douglas Williams
• Ebony Williams
• Edna Williams
• Edwana Deatrice Williams
• Edward Williams
• Elaine Williams

• Emergency Medicine Physician in Las Vegas, NV
• Providers in Las Vegas, NV by specialty
• Emergency Medicine Physician in Nevada

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 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.