Tammy M Chen

Primary specialty

Physician AssistantTaxonomy code 363A00000X

Practice address

888 Brea Canyon Rd
Diamond Bar, CA 91789-3059

Phone

(909) 594-3382

Fax

(626) 667-7633

NPI assigned

Jan 4, 2023

Sex

Female

Sole proprietor

Yes

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

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1672790400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776211200000",
    "number": "1285347377",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3535 PHILADELPHIA ST",
            "city": "CHINO",
            "state": "CA",
            "postal_code": "917102089",
            "telephone_number": "909-851-0876"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "888 BREA CANYON RD",
            "city": "DIAMOND BAR",
            "state": "CA",
            "postal_code": "917893059",
            "telephone_number": "909-594-3382",
            "fax_number": "626-667-7633"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHEN",
        "first_name": "TAMMY",
        "middle_name": "M",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-01-04",
        "last_updated": "2026-04-15",
        "certification_date": "2026-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Joan Chen, PT, DPT
• Jing Chen, M.D.
• Lina Chen, OT
• Robby M Chen, D.C.
• Stephanie Chen, OMD, L.AC
• Yi-Chen Rose Chen, MPH, RD, CSG
• Chihyunglee,DDS,Inc.
• Chino Hills Medical Equipment, Inc.
• Daniel Minku Cho, PMHNP
• Jaewoo Cho, D.D.S.

• Physician Assistant in Diamond Bar, CA
• Providers in Diamond Bar, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 15, 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.