1. Home
  2. Directory
  3. California
  4. Santa Monica
  5. Internal Medicine
  6. NPI Profile
Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

KATHERINE HAHN MEDICAL CORPORATION
NPI 1871406397
Internal Medicine - Gastroenterology in Santa Monica, CA

Active since September 25, 2026
233 22ND ST, SANTA MONICA, CA 90402(631) 807-9252 Get Directions Write a Review

NPPES record added: September 25, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

About Katherine Hahn Medical Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE HAHN MEDICAL CORPORATION (NPI 1871406397) is a healthcare organization registered as a gastroenterology in Santa Monica, California and active in the NPI registry since September 2026. The organization lists Katherine J Hahn, Owner, as its authorized official.

NPPES Registry Identity

NPI1871406397
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameKATHERINE HAHN MEDICAL CORPORATION
Location Address233 22ND STSanta Monica, CA 90402-2505
Mailing Address233 22nd StSanta Monica, CA 90402-2505 · (631) 807-9252
Phone(631) 807-9252
Organization SubpartNo
Authorized OfficialKatherine J HahnOwner · (631) 807-9252
Enumeration DateSeptember 25, 2026
NPPES CertifiedSeptember 25, 2026
✔ NPI 1871406397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
233 22ND ST, Santa Monica, CA 90402
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Hahn Medical Corporation's NPI number?

The NPI number for Katherine Hahn Medical Corporation is 1871406397. It was assigned to this organization in the NPPES registry on September 25, 2026.

Where is Katherine Hahn Medical Corporation located?

Katherine Hahn Medical Corporation is located at 233 22nd St, Santa Monica, CA 90402. The listed phone number is (631) 807-9252.

What is Katherine Hahn Medical Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Katherine Hahn Medical Corporation was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.