Ngai Xuan Nguyen, MD

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

A390570 Issued in CA

Practice address

696 E Santa Clara St
Suite 108
San Jose, CA 95112-1911

Phone

(408) 971-8441

Fax

(408) 295-6547

NPI assigned

May 30, 2006

Last updated

Sep 23, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Cardiovascular Disease (Cardiology)Also: Geriatric Medicine, Internal Medicine

Education

Other, 1974

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• VN Home Health Care Home health agency, San Jose, CA, CCN 058278
• Best Home Health Providers, Inc Home health agency, Hayward, CA, CCN 059546
• Asian Network Pacific Home Care, Inc Home health agency, Oakland, CA, CCN 557747
• Santa Clara Valley Medical Center Hospital, San Jose, CA, CCN 050038

Merit-based Incentive Payment System (MIPS)

Final score

95.15 of 100Reported as group

Quality

75.14

Improvement activities

40

Cost

83.64

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/EEFCBA
• FHIR API: https://fhir4.healow.com/fhir/r4/EEFCBA/Endpoint/EEFCBA
• Direct secure messaging: nnguyen42092@santaclaravalley.direct-ci.net

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.

• Casavina Foundation Corp

  • Skilled Nursing Facility
  • San Jose, CA
  • NPI 1720032329

  5% Or Greater Direct Ownership Interest, Adp of the SNF, Corporate Director, Corporate Officer, Operational/Managerial Control

  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.

• Ngai Nguyen

  • Cardiovascular Disease Physician
  • San Jose, CA
  • NPI 1518396712
  NPD (past) Authorized official
• County of Santa Clara

  dba Inpatient Acute/Outpatient Facility Services

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1063406551
  NPD (past)
• Heart & Rhythm Clinic, a Professional Medical Corporation

  • Preferred Provider Organization
  • San Jose, CA
  • NPI 1679931521
  NPD (past)

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

• Asian Network Pacific Home Care, Inc

  dba Pacific Home Care

  • Home Health Agency
  • Oakland, CA
  • NPI 1932285335
  Care Compare affiliation
• Best Home Health Providers, Inc.

  • Home Health Agency
  • Hayward, CA
  • NPI 1144592916
  Care Compare affiliation
• County of Santa Clara

  dba Inpatient Acute/Outpatient Facility Services

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1063406551
  Care Compare affiliation
• VN Home Health Care

  • Home Health Agency
  • San Jose, CA
  • NPI 1891747978
  Care Compare affiliation

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

{
    "created_epoch": "1148947200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758585600000",
    "number": "1205883501",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "696 E SANTA CLARA ST STE 108",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951121911",
            "telephone_number": "408-971-8441",
            "fax_number": "408-295-6547"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "696 E SANTA CLARA ST",
            "address_2": "SUITE 108",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951121911",
            "telephone_number": "408-971-8441",
            "fax_number": "408-295-6547"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "NGAI",
        "middle_name": "XUAN",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-05-30",
        "last_updated": "2025-09-23",
        "certification_date": "2025-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CA",
            "license": "A390570",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nancy T Nguyen
• Nang Nguyen, D.O.
• Natasha Argoncillo Nguyen
• Nathan Nguyen
• Nga Thu Nguyen, LCSW
• Nghia Trung Nguyen, LCSW
• Ngoc Nguyen, M.D.
• Ngoc Nguyen, PHARM.D.
• Ngoc Anh Thi Nguyen
• Ngoc Khuyen Thi Nguyen

• Cardiovascular Disease Physician in San Jose, CA
• Providers in San Jose, CA by specialty
• Cardiovascular Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 2025; 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.
• 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.