Thuyvan Lam Nguyen, D.O.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

20A11905 Issued in CA

Practice address

2799 Gateway Dr Ste 100
Riverside, CA 92507-0908

Phone

(833) 450-5967

Fax

(833) 450-5967

NPI assigned

Apr 15, 2010

Last updated

Jul 29, 2026By the provider in NPPES

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

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy, Doctor of Medicine

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: van.nguyen.1@17371.direct.athenahealth.com
• Direct secure messaging: thuyvannguyen@hcpca.allscriptsdirect.net
• Direct secure messaging: thuyvan.nguyen.p7@direct.monarchhealthcare.nextgenshare.com

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

• Unique Hospice and Palliative Care, Inc.

  • Community Based Hospice Care Agency
  • Arcadia, CA
  • NPI 1346543865

  Contracted Managing Employee

  CMS ownership

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

• Beaver Medical Group P C

  dba Optum

  • Family Medicine Physician
  • Redlands, CA
  • NPI 1649503319

  Internal Medicine

  Medicare reassignment NPD
• Centers for Family Medicine GP

  dba Optumcare Medical Group

  • Family Medicine Physician
  • Los Alamitos, CA
  • NPI 1467598243

  Internal Medicine

  Medicare reassignment NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment NPD
• Saddleback Medical Group Inc

  • Gastroenterology Physician
  • Laguna Hills, CA
  • NPI 1386605822
  Medicare reassignment NPD
• Pinnacle Medical Group, Inc

  dba Optum

  • Family Medicine Physician
  • Fontana, CA
  • NPI 1376876912
  Medicare reassignment
• Beaver Medical Group P C

  • Physical Therapist
  • Redlands, CA
  • NPI 1427090281
  NPD
• Cassidy Medical Group Inc.

  • Multi-Specialty Clinic/Center
  • Vista, CA
  • NPI 1215003470
  NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Addiction Medicine (Internal Medicine) Physician
  • Tustin, CA
  • NPI 1891981502
  NPD
• Anaheim Memorial Medical Center

  • General Acute Care Hospital
  • Anaheim, CA
  • NPI 1295782381
  NPD (past)
• Goldencast Medical Corporation

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1952550097
  NPD (past)
• Memorial Medical Group Inc

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1255523643
  NPD (past)

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

{
    "created_epoch": "1271289600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785283200000",
    "number": "1275859233",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2799 GATEWAY DR STE 100",
            "city": "RIVERSIDE",
            "state": "CA",
            "postal_code": "925070908",
            "telephone_number": "833-450-5967",
            "fax_number": "833-450-5967"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2799 GATEWAY DR STE 100",
            "city": "RIVERSIDE",
            "state": "CA",
            "postal_code": "925070908",
            "telephone_number": "833-450-5967",
            "fax_number": "833-450-5967"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "THUYVAN",
        "middle_name": "LAM",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-04-15",
        "last_updated": "2026-07-29",
        "certification_date": "2026-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A11905",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Thien Minh Nguyen, MD
• Thomas Nguyen, DDS
• Thutrang Nguyen
• Thuy Nguyen
• Thuy Dung Nguyen
• Thy Pham Nguyen
• Tranhoai Nguyen, M.D.
• Tri Nguyen, PA
• Tri Minh Nguyen, DO
• Trieu Nguyen

• Internal Medicine Physician in Riverside, CA
• Providers in Riverside, 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 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.