Katherine Hahn Medical Corporation

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

Legal business name

KATHERINE HAHN MEDICAL CORPORATION

Practice address

233 22ND St
Santa Monica, CA 90402-2505

Phone

(631) 807-9252

NPI assigned

Sep 25, 2026

Last updated

Sep 25, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. Katherine J Hahn, MD

Title

Owner

Phone

(631) 807-9252

Specialties & licenses 1

Addresses

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

{
    "created_epoch": "1790294400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790294400000",
    "number": "1871406397",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "233 22ND ST",
            "city": "SANTA MONICA",
            "state": "CA",
            "postal_code": "904022505",
            "telephone_number": "631-807-9252"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "233 22ND ST",
            "city": "SANTA MONICA",
            "state": "CA",
            "postal_code": "904022505",
            "telephone_number": "631-807-9252"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "KATHERINE HAHN MEDICAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-09-25",
        "last_updated": "2026-09-25",
        "certification_date": "2026-09-25",
        "status": "A",
        "authorized_official_last_name": "HAHN",
        "authorized_official_first_name": "KATHERINE",
        "authorized_official_middle_name": "J",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "631-807-9252",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Gastroenterology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sara Kassabian
• Norma Gabriela Orellana Kasselmann
• Steven M. Kastenbaum, O.D.
• Julia Grace Katcher
• Katherine Chang, M.D.
• Anupama S.Q. Kathiresan, M.D.
• Eva Halevi Kathok, LCSW
• Kati Morton, LMFT
• Earl J. Katigbak
• William Nelson Katkov, M.D.

• Gastroenterology Physician in Santa Monica, CA
• Providers in Santa Monica, CA by specialty
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 25, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.

Verify at the official NPI Registry.