Diana Phuongthao Tran

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA61859 Issued in CA

Practice address

999 N Tustin Ave Ste 216
Santa Ana, CA 92705-6506

Phone

(714) 545-5550

NPI assigned

Jul 28, 2022

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

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

University of California, Davis School of Medicine, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Pacific Neuropsychiatric Specialists IncGroup PAC ID 3375796170, 70 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

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

• Pacific Neuropsychiatric Specialists Inc.

  • Psychiatry Physician
  • Costa Mesa, CA
  • NPI 1356685218
  Medicare reassignment Care Compare group NPD
• Market Pharmacy LLC

  • Community/Retail Pharmacy
  • Santa Ana, CA
  • NPI 1194405076
  NPD

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

{
    "created_epoch": "1658966400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771977600000",
    "number": "1154057420",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "999 N TUSTIN AVE STE 216",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927056506"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "999 N TUSTIN AVE STE 216",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927056506",
            "telephone_number": "714-545-5550"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TRAN",
        "first_name": "DIANA",
        "middle_name": "PHUONGTHAO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-07-28",
        "last_updated": "2026-02-25",
        "certification_date": "2026-02-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "PA61859",
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bao Quoc Tran, M.D.
• Brianna Yen Tran
• Carolyn Ngoc Tran, PA
• Darlene Tran, DDS
• Deanna Tran, RBT
• Dorothy Tran, RN
• Duyen Thi Tran, PHARMACIST
• Giang Tung Tran
• Helen Tran
• Helen Phan Tran, O.D.

• Physician Assistant in Santa Ana, CA
• Providers in Santa Ana, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 25, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.