Truong Son Huu Nguyen, D.O., Inc.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

Legal business name

TRUONG SON HUU NGUYEN, D.O., INC.

Doing business as

Walnut Health Direct Primary Care Medical Clinic

Practice address

402 S Prospectors Rd
Diamond Bar, CA 91765-1618

Phone

(909) 531-5758

Fax

(909) 752-8031

NPI assigned

Jul 8, 2026

Last updated

Sep 16, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. Truong Son Huu Nguyen, DO

Title

Ceo

Phone

(909) 566-2166

Specialties & licenses 1

Addresses

Other names 1

• Walnut Health Direct Primary Care Medical Clinic Doing business as

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

{
    "created_epoch": "1783468800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1789516800000",
    "number": "1710805593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20929 DIVONNE DR",
            "city": "WALNUT",
            "state": "CA",
            "postal_code": "917892526",
            "telephone_number": "909-566-2166"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "402 S PROSPECTORS RD",
            "city": "DIAMOND BAR",
            "state": "CA",
            "postal_code": "917651618",
            "telephone_number": "909-531-5758",
            "fax_number": "909-752-8031"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRUONG SON HUU NGUYEN, D.O., INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-07-08",
        "last_updated": "2026-09-16",
        "certification_date": "2026-09-16",
        "status": "A",
        "authorized_official_last_name": "NGUYEN",
        "authorized_official_first_name": "TRUONG SON",
        "authorized_official_middle_name": "HUU",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "909-566-2166",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Walnut Health Direct Primary Care Medical Clinic",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

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• Family Medicine Physician in Diamond Bar, CA
• Providers in Diamond Bar, CA by specialty
• Family Medicine Physician in California

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