Kathleen Nguyen, DMD

Primary specialty

DentistTaxonomy code 122300000X

License

110274 Issued in CA

Practice address

4902 Irvine Center Dr Ste 108
Irvine, CA 92604-3334

Phone

(949) 828-4772

NPI assigned

Jun 22, 2023

Last updated

Apr 19, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Horizon Modern Dentistry and Orthodontics, LLP

  dba Horizon Modern Dentistry and Orthodontics

  • General Practice Dentistry
  • Scottsdale, AZ
  • NPI 1922314202
  NPD (past)

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

{
    "created_epoch": "1687392000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776556800000",
    "number": "1881370005",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4902 IRVINE CENTER DR STE 108",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926043334",
            "telephone_number": "949-828-4772"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4902 IRVINE CENTER DR STE 108",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926043334",
            "telephone_number": "949-828-4772"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "KATHLEEN",
        "credential": "DMD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-06-22",
        "last_updated": "2026-04-19",
        "certification_date": "2026-04-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "CA",
            "license": "110274",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jon T Nguyen, M.D.
• Josephine H Nguyen
• Julie Chau Nguyen, D.D.S.
• Justina Te Nguyen, MSN, APRN, PMHNP-BC
• Kaden Nguyen
• Katrina Kieu Nguyen
• Kenny Tu Nguyen
• Kevin Nguyen
• Kevin Nguyen
• Khanh Van Nguyen, MD

• Dentist in Irvine, CA
• Providers in Irvine, CA by specialty
• Dentist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 19, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.