Organization Active NPI

Alex Yen DDS Inc

  • Dentist
  • San Mateo, CA
National Provider Identifier
1366340705
Registry record updated Oct 27, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
DentistTaxonomy code 122300000X
Legal business name
ALEX YEN DDS INC
Practice address
256 N San Mateo Dr Ste 8
San Mateo, CA 94401-2670
Phone
(650) 342-9016
NPI assigned
Oct 27, 2026
Last updated
Oct 27, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 27, 2026

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

Authorized official

Name
Dr. Alex Yen, DENTIST
Title
Provider
Phone
(408) 505-6695

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
DentistGroup: 193200000X MULTI-SPECIALTY GROUP 122300000X Primary

Addresses

Primary practice location

256 N San Mateo Dr Ste 8
San Mateo, CA 94401-2670

Mailing address

256 N San Mateo Dr Ste 8
San Mateo, CA 94401-2670
Phone (650) 342-9016

National Provider Directory

National Provider Directory
Tax ID family
Alex Yen DDS Inc3 organizations share this tax ID, including this one

Other organizations with this tax ID 2

Organizations that report the same tax identification number in the National Provider Directory.

Locations

256 N San Mateo Dr
Ste 8
San Mateo, CA 94401
Phone (650) 342-9016

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1793059200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1793059200000",
    "number": "1366340705",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "256 N SAN MATEO DR STE 8",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944012670",
            "telephone_number": "650-342-9016"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "256 N SAN MATEO DR STE 8",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944012670",
            "telephone_number": "650-342-9016"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "ALEX YEN DDS INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-10-27",
        "last_updated": "2026-10-27",
        "certification_date": "2026-10-27",
        "status": "A",
        "authorized_official_last_name": "YEN",
        "authorized_official_first_name": "ALEX",
        "authorized_official_title_or_position": "PROVIDER",
        "authorized_official_telephone_number": "408-505-6695",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DENTIST"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Mateo, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 27, 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.