Thai Dinh Nguyen, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A91024 Issued in CA

Practice address

5030 Westminster Ave
Santa Ana, CA 92703-1151

Phone

(714) 775-8090

Fax

(657) 251-0494

NPI assigned

Oct 3, 2006

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, NM2 enrollments

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 2

Specialty

Internal Medicine

Education

University of Iowa, RJ & L Carver College of Medicine, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Theresa Thanh Ngoc Nguyen MD IncGroup PAC ID 8820250293, 2 clinicians

Family Choice Aco IncGroup PAC ID 7719379395, 60 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Alta Home Health Care Services, Inc. Home health agency, Garden Grove, CA, CCN 757271
• Excellence Home Health Care Agency Inc Home health agency, Chino, CA, CCN 058290
• Uci Health-Orange Hospital, Orange, CA, CCN 050348

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

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.

• Family Choice Aco Inc

  • Internal Medicine Physician
  • Westminster, CA
  • NPI 1396416863
  Medicare reassignment Care Compare group NPD
• Theresa Thanh Ngoc Nguyen, MD, Inc.

  • Internal Medicine Physician
  • Santa Ana, CA
  • NPI 1750667192
  Medicare reassignment Care Compare group NPD
• NM Family Services LLC

  • Physical Therapist
  • Santa Teresa, NM
  • NPI 1649697657

  Internal Medicine

  Medicare reassignment NPD
• NM Family Services LLC

  • Psychologist
  • Sunland Park, NM
  • NPI 1225426356
  NPD
• St Joseph Hospital of Orange

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1912982216
  NPD (past)
• Theresa Thanh Ngoc Nguyen, MD, Inc.

  • Medical Specialty Clinic/Center
  • Westminster, CA
  • NPI 1386863454
  NPD (past)
• NM Integrated Solutions

  • Multi-Specialty Clinic/Center
  • Las Cruces, NM
  • NPI 1063147270
  NPD (past)

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

• Alta Home Health Care Services, Inc.

  • Home Health Agency
  • Garden Grove, CA
  • NPI 1801565908
  Care Compare affiliation
• Excellence Home Health Care Agency, Inc.

  • Home Health Agency
  • Chino, CA
  • NPI 1568556801
  Care Compare affiliation
• University of California Irvine

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1159833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784505600000",
    "number": "1467547042",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5030 WESTMINSTER AVE",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927031151",
            "telephone_number": "714-775-8090",
            "fax_number": "657-251-0494"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5030 WESTMINSTER AVE",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927031151",
            "telephone_number": "714-775-8090",
            "fax_number": "657-251-0494"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "THAI",
        "middle_name": "DINH",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-03",
        "last_updated": "2026-07-20",
        "certification_date": "2026-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A91024",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stacey P Nguyen, PHARM D
• Suzanne Nguyen, MD
• Tam Thi Minh Nguyen
• Tammy Thu Nguyen, PA-C
• Tan Nhat Nguyen, PHARM D
• Thanh Lan Thi Nguyen, PHARMD
• Thanh Quoc Nguyen, DDS
• Theresa Thanh Ngoc Nguyen, M.D.
• Thu Nguyen, PHARMD
• Thu-Thuy Thi Nguyen

• Internal Medicine Physician in Santa Ana, CA
• Providers in Santa Ana, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 20, 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.