James C.S. Hahn, M.D. , Inc.
About this NPIWhat this record shows.
NPI 1023893435 is registered to James C.S. Hahn, M.D. , Inc., a healthcare organisation classified as "Internal Medicine" and located at 1245 Wilshire Blvd Ste 790 in Los Angeles, California. The organisation's authorised official is James Hahn. The organisation has been enumerated in the NPI registry since 2023.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Part B Supplier
- O20240319003375Clinic/Group PracticeCA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans James C.S. Hahn, M.D. , Inc. accepts. To confirm in-network status with your specific health plan, contact James C.S. Hahn, M.D. , Inc. directly at (323) 735-1111.
Frequently asked
Yes. NPI 1023893435 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (323) 735-1111.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. James C.S. Hahn, M.D. , Inc. is a Type-2 organisational NPI.