Physician Profile
Diana V. Jao, MD is a healthcare provider in San Mateo, CA specializing in internal medicine. Diana trained at Hahnemann University College of Medicine, graduating in 1988. Diana is also listed as specializing in geriatric medicine. This provider record is associated with NPI 1780683789.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
222 W 39TH AVE
San Mateo, CA 94403
Dr. Jao is an internist in San Mateo, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Jao is listed at 222 W 39Th Ave, San Mateo, CA 94403. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (650) 573-2426. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Jao's National Provider Identifier is 1780683789. 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. Jao attended Hahnemann University College of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
Dr. Jao has 38 years experience. Calculated from a graduation year of 1988, 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. Jao. If this is you, claiming it is free.
Guide.md
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