Organization Active NPI

Nicholas Trieu DDS Inc

  • General Practice Dentistry
  • Ontario, CA
National Provider Identifier
1639040348
Registry record updated Sep 16, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice DentistryTaxonomy code 1223G0001X
Legal business name
NICHOLAS TRIEU DDS INC
Practice address
1755 S Mountain Ave Ste a
Ontario, CA 91762-5972
Phone
(909) 317-8486
NPI assigned
Sep 16, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Sep 16, 2025

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

Authorized official

Name
Dr. Nicholas Vince Ramas Trieu, DDSNPI 1942191879
Title
Dentist
Phone
(909) 317-8486

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

1755 S Mountain Ave Ste a
Ontario, CA 91762-5972

Mailing address

6303 Sloane CT
Rancho Cucamonga, CA 91739-2255

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

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": "1757980800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757980800000",
    "number": "1639040348",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6303 SLOANE CT",
            "city": "RANCHO CUCAMONGA",
            "state": "CA",
            "postal_code": "917392255"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1755 S MOUNTAIN AVE STE A",
            "city": "ONTARIO",
            "state": "CA",
            "postal_code": "917625972",
            "telephone_number": "909-317-8486"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NICHOLAS TRIEU DDS INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-09-16",
        "last_updated": "2025-09-16",
        "certification_date": "2025-09-15",
        "status": "A",
        "authorized_official_last_name": "TRIEU",
        "authorized_official_first_name": "NICHOLAS",
        "authorized_official_middle_name": "VINCE RAMAS",
        "authorized_official_title_or_position": "DENTIST",
        "authorized_official_telephone_number": "909-317-8486",
        "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 Ontario, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 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.