Tuan D. Nguyen, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

A67517 Issued in CA

Practice address

4002 Vista Way
Oceanside, CA 92056-4506

Phone

(760) 940-3808

NPI assigned

Sep 21, 2005

Sex

Male

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

Enrolled in CA

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.

Enrollment records 1

Specialty

Emergency Medicine

Education

University of California, Geffen School of Medicine, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Columbia Emergency Medical Group IncGroup PAC ID 2668376500, 38 clinicians

Cep America - CaliforniaGroup PAC ID 6103739131, 1,278 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorialcare Orange Coast Medical Center Hospital, Fountain Valley, CA, CCN 050678
• Memorialcare Long Beach Medical Center Hospital, Long Beach, CA, CCN 050485

Merit-based Incentive Payment System (MIPS)

Final score

96.51 of 100Reported as group

Quality

87.09

Improvement activities

40

Cost

78.7

Merit-based Incentive Payment System (MIPS)

Final score

96.69 of 100Reported as group

Quality

90

Improvement activities

40

Cost

78.43

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tnguyenmd17242@direct.memorialcare.org

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.

• Cep America - California

  • Emergency Medicine Physician
  • Santa Ana, CA
  • NPI 1548667843
  Medicare reassignment Care Compare group NPD
• Columbia Emergency Medical Group Inc

  • Emergency Medicine Physician
  • Long Beach, CA
  • NPI 1871551119
  Medicare reassignment Care Compare group NPD
• Intercommunity Emergency Medical Group

  • Emergency Medicine Physician
  • Whittier, CA
  • NPI 1871535286
  Medicare reassignment NPD
• Cep America-California

  • Emergency Medicine Physician
  • Fountain Valley, CA
  • NPI 1093756173
  NPD
• Cep America-California

  • Emergency Medicine Physician
  • Murrieta, CA
  • NPI 1588552848
  NPD
• Orange Coast Memorial Medical Center

  • General Acute Care Hospital
  • Fountain Valley, CA
  • NPI 1497702575
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Long Beach Memorial Medical

  • General Acute Care Hospital
  • Long Beach, CA
  • NPI 1962442012
  Care Compare affiliation
• Orange Coast Memorial Medical Center

  • General Acute Care Hospital
  • Fountain Valley, CA
  • NPI 1497702575
  Care Compare affiliation

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

{
    "created_epoch": "1127260800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1083600449",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3156 VISTA WAY",
            "address_2": "SUITE 410",
            "city": "OCEANSIDE",
            "state": "CA",
            "postal_code": "920563622",
            "telephone_number": "760-439-1963",
            "fax_number": "760-967-7160"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4002 VISTA WAY",
            "city": "OCEANSIDE",
            "state": "CA",
            "postal_code": "920564506",
            "telephone_number": "760-940-3808"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "TUAN",
        "middle_name": "D.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-21",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "A67517",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessie Nguyen, PT, DPT
• Jimmy Tung Le Nguyen, O.D.
• Nga Francyne Nguyen, LCSW
• Tho Thi Nguyen, DPM
• Tiffany Nguyen
• Uyen Tran Phuong Nguyen, RPH
• Victoria Nguyen
• Nima Niakishargh, DPT
• Edward D. Niavez, L.V.N.
• Sandra Lynn Nibbelink Ahearn, NP

• Emergency Medicine Physician in Oceanside, CA
• Providers in Oceanside, CA by specialty
• Emergency Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.