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JAMES C.S. HAHN, M.D. , INC.
NPI 1023893435
Internal Medicine in Los Angeles, CA

Active since August 25, 2023CLIA 05D0541675 · Waiver
1245 WILSHIRE BLVD STE 790, LOS ANGELES, CA 90017(323) 735-1111(323) 735-3306 Get Directions Write a Review

NPPES record last updated: October 10, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 10, 2023, Aug 25, 2023 (2 updates tracked since 2023).

About James C.s. Hahn, M.d. , Inc. NPPES

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

JAMES C.S. HAHN, M.D. , INC. (NPI 1023893435) is a healthcare organization registered as an internal medicine in Los Angeles, California and active in the NPI registry since August 2023. The organization holds a CLIA Waiver certificate valid through August 31, 2026 and lists James Hahn, Md, as its authorized official.

NPPES Registry Identity

NPI1023893435
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameJAMES C.S. HAHN, M.D. , INC.
Location Address1245 WILSHIRE BLVD STE 790Los Angeles, CA 90017-4881
Mailing Address1245 Wilshire Blvd Ste 790Los Angeles, CA 90017-4881 · (323) 735-1111 · Fax (323) 735-3306
Phone(323) 735-1111
Fax(323) 735-3306
Organization SubpartNo
Authorized OfficialJames HahnMd · (213) 810-5050
Enumeration DateAugust 25, 2023
Last NPPES UpdateOctober 10, 20232 updates tracked since enumeration
NPPES CertifiedOctober 10, 2023
✔ NPI 1023893435 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1245 WILSHIRE BLVD STE 790, Los Angeles, CA 90017
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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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0541675

James C Hahn MD · Los Angeles, CA
Active · expires Aug 31, 2026
CLIA Number05D0541675
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorJames C. Hahn
Laboratory Phone(323) 735-1111
Laboratory LocationJames C Hahn MD1245 Wilshire Blvd Ste 790, Los Angeles, CA 90017
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

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 James C.S. Hahn, M.D. , Inc.'s NPI number?

The NPI number for James C.S. Hahn, M.D. , Inc. is 1023893435. It was assigned to this organization in the NPPES registry on August 25, 2023.

Where is James C.S. Hahn, M.D. , Inc. located?

James C.S. Hahn, M.D. , Inc. is located at 1245 Wilshire Blvd Ste 790, Los Angeles, CA 90017. The listed phone number is (323) 735-1111.

What is James C.S. Hahn, M.D. , Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does James C.S. Hahn, M.D. , Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0541675) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for James C.S. Hahn, M.D. , Inc. was last updated on October 10, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.