Organization Active NPI

Leong Dental Inc

  • General Practice Dentistry
  • San Mateo, CA
National Provider Identifier
1528983004
Registry record updated Aug 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice DentistryTaxonomy code 1223G0001X
Legal business name
LEONG DENTAL INC
Practice address
420 Peninsula Ave
San Mateo, CA 94401-1653
Phone
(650) 342-3597
NPI assigned
Aug 12, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 12, 2026

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

Authorized official

Name
Dr. Waymond K Leong, DDSNPI 1447475405
Title
Co-Owner
Phone
(650) 342-3597

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
General Practice DentistryGroup: 193400000X SINGLE SPECIALTY GROUP 1223G0001X Primary

Addresses

Primary practice location

420 Peninsula Ave
San Mateo, CA 94401-1653

Mailing address

420 Peninsula Ave
San Mateo, CA 94401-1653
Phone (650) 342-3597

Other practice location 1

1800 Noriega St # 3
San Francisco, CA 94122-4399
Phone (415) 276-5777

Other practice location 2

4596 Mission St # C
San Francisco, CA 94112-2642
Phone (415) 278-5777

National Provider Directory

National Provider Directory

Locations

420 Peninsula Ave
San Mateo, CA 94401
Phone (650) 342-3597

Practitioners & affiliated clinicians

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1786492800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786492800000",
    "number": "1528983004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "420 PENINSULA AVE",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944011653",
            "telephone_number": "650-342-3597"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "420 PENINSULA AVE",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944011653",
            "telephone_number": "650-342-3597"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 Noriega St # 3",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941224399",
            "country_code": "US",
            "telephone_number": "415-276-5777",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4596 Mission St # C",
            "address_purpose": "LOCATION",
            "city": "San Francisco",
            "state": "CA",
            "postal_code": "941122642",
            "country_code": "US",
            "telephone_number": "415-278-5777",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "LEONG DENTAL INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-08-12",
        "last_updated": "2026-08-12",
        "certification_date": "2026-08-12",
        "status": "A",
        "authorized_official_last_name": "LEONG",
        "authorized_official_first_name": "WAYMOND",
        "authorized_official_middle_name": "K",
        "authorized_official_title_or_position": "CO-OWNER",
        "authorized_official_telephone_number": "650-342-3597",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DDS"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Dentist, General Practice",
            "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 Aug 12, 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.