T.H. Choi, a Medical Corp.

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

A70132 Issued in CA

Legal business name

T.H. CHOI, A MEDICAL CORP.

Practice address

3772 Katella Ave Ste 107
Los Alamitos, CA 90720-6424

Phone

(562) 431-7877

Fax

(562) 431-7882

NPI assigned

Mar 16, 2007

Organization subpart

No

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

Authorized official

Name

Dr. Hoon-Ji Helen Choi, M.D.NPI 1225062888

Title

Vice-President

Phone

(562) 881-3922

Specialties & licenses 1

Addresses

Tax ID family

T H Choi a Medical Corp2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• T.H. Choi, a Medical Corporation

  • Endocrinology, Diabetes & Metabolism Physician
  • Los Alamitos, CA
  • NPI 1295758639
  NPD tax ID

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Hoon-Ji Helen Choi, MD

  • Endocrinology, Diabetes & Metabolism Physician
  • Los Alamitos, CA
  • NPI 1225062888
  NPD Authorized official

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

{
    "created_epoch": "1174003200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1751241600000",
    "number": "1215051446",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3772 KATELLA AVE STE 107",
            "city": "LOS ALAMITOS",
            "state": "CA",
            "postal_code": "907206424",
            "telephone_number": "562-431-7877",
            "fax_number": "562-431-7882"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3772 KATELLA AVE STE 107",
            "city": "LOS ALAMITOS",
            "state": "CA",
            "postal_code": "907206424",
            "telephone_number": "562-431-7877",
            "fax_number": "562-431-7882"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "T.H. CHOI, A MEDICAL CORP.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-03-16",
        "last_updated": "2025-06-30",
        "certification_date": "2025-06-30",
        "status": "A",
        "authorized_official_last_name": "CHOI",
        "authorized_official_first_name": "HOON-JI",
        "authorized_official_middle_name": "HELEN",
        "authorized_official_title_or_position": "VICE-PRESIDENT",
        "authorized_official_telephone_number": "562-881-3922",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "CA",
            "license": "A70132",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mathew Byron Sullivan, PT
• Sunmed Medical Systems LLC
• Samantha Swift
• Jake Patrick Sylwanowicz, DDS
• T Pandya MD, Inc.
• T.H. Choi, a Medical Corporation
• Michael P. Tabibian, M.D.
• Mohan V. Tadikonda, M.D.
• Shahram Taheri, MD
• Tania Tahsili Fahadan, DMD

• Endocrinology, Diabetes & Metabolism Physician in Los Alamitos, CA
• Providers in Los Alamitos, CA by specialty
• Endocrinology, Diabetes & Metabolism Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 30, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.