Vivian DO

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

68010 Issued in CA

Practice address

1140 W la Veta Ave Ste 640
Orange, CA 92868-4228

Phone

(714) 564-3300

NPI assigned

Mar 2, 2026

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

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: No

Green means eligible to order or refer.

Specialty

Physician Assistant

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Orange County Heart Institute and Research Center a Medical Group

  • Cardiovascular Disease Physician
  • Orange, CA
  • NPI 1265463608
  NPD
• Tyson C. Cobb, M.D., Inc

  • Specialist
  • Orange, CA
  • NPI 1922247485
  NPD

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

{
    "created_epoch": "1772409600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772668800000",
    "number": "1033064373",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1140 W LA VETA AVE STE 640",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928684228",
            "telephone_number": "714-564-3300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1140 W LA VETA AVE STE 640",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928684228",
            "telephone_number": "714-564-3300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DO",
        "first_name": "VIVIAN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-03-02",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CA",
            "license": "68010",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nam DO, RN
• Patrick Cao DO
• Sarah Nguyen DO
• Theresa DO, PHARM.D.
• Victoria DO
• Vy DO
• Diana Doan-Nguyen
• Anh Doan
• Cynthia L Doan
• Kathleen Doan, R.N., N.P.

• Physician Assistant in Orange, CA
• Providers in Orange, CA by specialty
• Physician Assistant in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 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.