NPIMap

Organization Active NPI

Nancy Kwon Hsieh, DDS, Inc

  • General Practice Dentistry
  • San Francisco, CA
National Provider Identifier
1609088624
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice DentistryTaxonomy code 1223G0001X
License
50401 Issued in CA
Legal business name
NANCY KWON HSIEH, DDS, INC
Practice address
3400 California St
Suite 302
San Francisco, CA 94118-1863
Phone
(415) 567-1532
NPI assigned
May 3, 2007
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Authorized official

Name
Nancy Kwon Hsieh, DDS, MSNPI 1538371554
Title
Owner
Phone
(415) 567-1532

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 2

Specialty (taxonomy)CodeLicenseStatePrimary
General Practice DentistryGroup: 193200000X MULTI-SPECIALTY GROUP 1223G0001X 50401 CA Primary
Pediatric DentistryGroup: 193200000X MULTI-SPECIALTY GROUP 1223P0221X 50297 CA

Addresses

Primary practice location

3400 California St
Suite 302
San Francisco, CA 94118-1863

Mailing address

3400 California St
Suite 302
San Francisco, CA 94118-1863
Phone (415) 567-1532

National Provider Directory

National Provider Directory

Locations

3400 California St
Ste 302
San Francisco, CA 94118
Phone (415) 567-1532

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": "1178150400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1609088624",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 CALIFORNIA ST",
            "address_2": "SUITE 302",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941181863",
            "telephone_number": "415-567-1532"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3400 CALIFORNIA ST",
            "address_2": "SUITE 302",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941181863",
            "telephone_number": "415-567-1532"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NANCY KWON HSIEH, DDS, INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-05-03",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "HSIEH",
        "authorized_official_first_name": "NANCY",
        "authorized_official_middle_name": "KWON",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "415-567-1532",
        "authorized_official_credential": "DDS, MS"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist, General Practice",
            "state": "CA",
            "license": "50401",
            "primary": true
        },
        {
            "code": "1223P0221X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dentist, Pediatric Dentistry",
            "state": "CA",
            "license": "50297",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in San Francisco, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.