NPIMap

Organization Active NPI

William Cox Dental Corporation

Doing business as Gentle Dental Hillsdale

  • Dentist
  • San Mateo, CA
National Provider Identifier
1609804640
Registry record updated Aug 22, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
DentistTaxonomy code 122300000X
Legal business name
WILLIAM COX DENTAL CORPORATION
Doing business as
Gentle Dental Hillsdale
Practice address
360 Hillsdale Mall
San Mateo, CA 94403-3425
Phone
(650) 341-8008
Fax
(650) 341-7675
NPI assigned
Jun 29, 2006
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 22, 2025

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

Authorized official

Name
Dr. William J Cox, DDS
Title
PC Owner/President
Phone
(800) 684-6440

Specialties & licenses 1

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

Addresses

Primary practice location

360 Hillsdale Mall
San Mateo, CA 94403-3425

Mailing address

PO Box 872710
Vancouver, WA 98687-2710
Phone (360) 869-7645

Other names 1

  • Gentle Dental Hillsdale Doing business as

National Provider Directory

National Provider Directory
Tax ID family
Gentle Dental Brentwood24 organizations share this tax ID, including this one

Other organizations with this tax ID 23

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

View all 23

Locations

360 Hillsdale Mall
San Mateo, CA 94403
Phone (650) 341-8008

NPI Registry JSON

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

{
    "created_epoch": "1151539200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1755820800000",
    "number": "1609804640",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 872710",
            "city": "VANCOUVER",
            "state": "WA",
            "postal_code": "986872710",
            "telephone_number": "360-869-7645",
            "fax_number": "877-725-7443"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "360 HILLSDALE MALL",
            "city": "SAN MATEO",
            "state": "CA",
            "postal_code": "944033425",
            "telephone_number": "650-341-8008",
            "fax_number": "650-341-7675"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WILLIAM COX DENTAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-29",
        "last_updated": "2025-08-22",
        "certification_date": "2025-08-22",
        "status": "A",
        "authorized_official_last_name": "COX",
        "authorized_official_first_name": "WILLIAM",
        "authorized_official_middle_name": "J",
        "authorized_official_title_or_position": "PC OWNER/PRESIDENT",
        "authorized_official_telephone_number": "800-684-6440",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DDS"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Gentle Dental Hillsdale",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Gentle Dental Hillsdale",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

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 22, 2025; 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.