Individual provider Active NPI

William Duy-Dat Ton-That, DDS

  • General Practice Dentistry
  • San Diego, CA
National Provider Identifier
1821917196
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice DentistryTaxonomy code 1223G0001X
License
8223 Issued in OK
Practice address
4025 Tripoli Ave FL 2
San Diego, CA 92140-5290
Phone
(161) 952-4400
NPI assigned
Jul 13, 2026
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
General Practice Dentistry 1223G0001X 8223 OK Primary

Addresses

Primary practice location

4025 Tripoli Ave FL 2
San Diego, CA 92140-5290

Mailing address

12908 Lorien Way
Oklahoma City, OK 73170-0404

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

NPI Registry JSON

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

{
    "created_epoch": "1783900800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1821917196",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12908 LORIEN WAY",
            "city": "OKLAHOMA CITY",
            "state": "OK",
            "postal_code": "731700404"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4025 TRIPOLI AVE FL 2",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921405290",
            "telephone_number": "161-952-4400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TON-THAT",
        "first_name": "WILLIAM",
        "middle_name": "DUY-DAT",
        "name_prefix": "Dr.",
        "credential": "DDS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2026-07-13",
        "last_updated": "2026-07-13",
        "certification_date": "2026-07-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "OK",
            "license": "8223",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Diego, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.