Ho-Hin Choy, M.D.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

A145348 Issued in CA

Practice address

2458 Hilborn Rd
Fairfield, CA 94534-1072

Phone

(707) 646-4400

NPI assigned

Mar 25, 2015

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

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

Interventional CardiologyAlso: Cardiovascular Disease (Cardiology), Internal Medicine

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Northbay Health Medical FoundationGroup PAC ID 3274010871, 207 clinicians

Northbay Physicians Surgery Center, LLCGroup PAC ID 0042122244, 336 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northbay Medical Center Hospital, Fairfield, CA, CCN 050367

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ho-hin.choy@697388111167492.direct.elationemr.com

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.

• Northbay Health Medical Foundation

  • Internal Medicine Physician
  • Fairfield, CA
  • NPI 1760283527

  Family Medicine

  Medicare reassignment Care Compare group NPD
• Northbay Healthcare Group

  • General Acute Care Hospital
  • Fairfield, CA
  • NPI 1821147786
  Medicare reassignment Care Compare group NPD
• Regents of the Univ of Ca

  • Maternal & Fetal Medicine Physician
  • Sacramento, CA
  • NPI 1013906973
  Medicare reassignment NPD
• Southern California Heart Centers a Medical Corporation

  • Interventional Cardiology Physician
  • San Gabriel, CA
  • NPI 1740225838

  Cardiovascular Disease

  Medicare reassignment NPD
• Northbay Healthcare Group

  • Multi-Specialty Clinic/Center
  • Vacaville, CA
  • NPI 1760534713
  NPD
• Regents of the Univ of Ca

  • Cardiovascular Disease Physician
  • Sacramento, CA
  • NPI 1053304113
  NPD
• Regents of the Univ of Ca

  • Diagnostic Radiology Physician
  • Sacramento, CA
  • NPI 1477546406
  NPD
• Regents of the Univ of Ca

  • Pulmonary Disease Physician
  • Sacramento, CA
  • NPI 1437142692
  NPD (past)

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

• Northbay Healthcare Group

  • General Acute Care Hospital
  • Fairfield, CA
  • NPI 1821147786
  Care Compare affiliation

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

{
    "created_epoch": "1427241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762387200000",
    "number": "1083008262",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2458 HILBORN RD",
            "city": "FAIRFIELD",
            "state": "CA",
            "postal_code": "945341072",
            "telephone_number": "707-646-4400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2458 HILBORN RD",
            "city": "FAIRFIELD",
            "state": "CA",
            "postal_code": "945341072",
            "telephone_number": "707-646-4400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHOY",
        "first_name": "HO-HIN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-03-25",
        "last_updated": "2025-11-06",
        "certification_date": "2025-11-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CA",
            "license": "A145348",
            "primary": true
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "CA",
            "license": "A145348",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Suheng Chiv
• James Changwon Choi, DDS
• Mark Choi, D.D.S.
• Susan Myunghee Choi, LCSW
• Veronica-Rennea Bello Chong, OTD, OTR
• Alice Chreng, DDS
• Mark R Christensen, O.D.
• Amanda Marie Christian, APRN, CNM
• Ladonna Christoffersen
• Arianna Christy

• Cardiovascular Disease Physician in Fairfield, CA
• Providers in Fairfield, 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 Nov 6, 2025; 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.