Hellen Mai Nguyen, DO

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

OL70114003 Issued in WA

Practice address

309 E 2ND St
Pomona, CA 91766-1854

Phone

(909) 469-5589

NPI assigned

May 16, 2023

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

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

{
    "created_epoch": "1684195200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781740800000",
    "number": "1134810724",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "501 S 5TH AVE",
            "city": "YAKIMA",
            "state": "WA",
            "postal_code": "989023550",
            "telephone_number": "509-853-1082",
            "fax_number": "509-573-6275"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "309 E 2ND ST",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "917661854",
            "telephone_number": "909-469-5589"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1806 W Lincoln Ave",
            "address_purpose": "LOCATION",
            "city": "Yakima",
            "state": "WA",
            "postal_code": "989022473",
            "country_code": "US",
            "telephone_number": "509-452-4520",
            "fax_number": "509-452-5224",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "HELLEN",
        "middle_name": "MAI",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-05-16",
        "last_updated": "2026-06-18",
        "certification_date": "2026-06-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "WA",
            "license": "OL70114003",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "WA",
            "license": "OL70114003",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elaine Nguyen
• Erika Vy Nguyen
• Grace Hoang-Oanh Nguyen, M.D.
• Grace K Nguyen
• Hao T Nguyen, MD
• Isabel Celeste Nguyen
• Jeanie Thanh Thu Nguyen
• Jessica Nguyen
• Jimmy Nguyen
• John Nguyen, PT

• Family Medicine Physician in Pomona, CA
• Providers in Pomona, 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 Jun 18, 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.