Matthew Winfred Duncan, M.D.

Primary specialty

Legal MedicineTaxonomy code 173000000X

License

C32967 Issued in CA

Practice address

1101 S Winchester Blvd
Suite I-207
San Jose, CA 95128-3901

Phone

(408) 248-5665

Fax

(408) 248-5224

NPI assigned

Mar 29, 2007

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

Other names 1

• Dr. Matthew Winfred Duncan Professional name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1175126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788048000000",
    "number": "1023137916",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2059 CAMDEN AVE",
            "address_2": "331",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951242024",
            "telephone_number": "408-926-4775",
            "fax_number": "408-369-8020"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 S WINCHESTER BLVD",
            "address_2": "SUITE I-207",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951283901",
            "telephone_number": "408-248-5665",
            "fax_number": "408-248-5224"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DUNCAN",
        "first_name": "MATTHEW",
        "middle_name": "WINFRED",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-03-29",
        "last_updated": "2026-08-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "173000000X",
            "taxonomy_group": "",
            "desc": "Legal Medicine",
            "state": "CA",
            "license": "C32967",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MATTHEW",
            "last_name": "DUNCAN",
            "middle_name": "WINFRED",
            "prefix": "DR.",
            "credential": "M.D.",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

• Jecedthel Dumpit, PHARMD
• Catherine Jean Duncan, BSW, MHRS
• Dana Danielle Duncan, MD
• Henry Walter Duncan, D.D.S.
• Jessica Duncan
• Taylor E Duncan
• Dung and Chau Phan Dental Corp. (V-Mex Dental)
• Dung My Phan MD Inc
• Joan Crisis Dungo, RN
• Debra Anne Dunkley, PT

• Legal Medicine in San Jose, CA
• Providers in San Jose, CA by specialty
• Legal Medicine in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 30, 2026; 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.