Physician Profile
Based in Walnut Creek, CA, Janet M. Hahn, MD is listed in the NPI registry under internal medicine. Janet graduated from Loma Linda University School of Medicine in 1996.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Source: NPPES NPI Registry
1425 S MAIN ST
Walnut Creek, CA 94596
Dr. Hahn is an internist in Walnut Creek, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Hahn is listed at 1425 S Main St, Walnut Creek, CA 94596. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (925) 295-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Hahn's National Provider Identifier is 1841362654. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Hahn attended Loma Linda University School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
Dr. Hahn has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hahn. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.