Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Diana Tsai, MD

Individual provider Family Medicine Physician · NPI 1669534467

Diana Tsai, MD is a Hospitalist in Mountain View, California. Graduated from Saint Louis University School of Medicine in 1999, 27 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Trained at
Saint Louis University School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

701 E El Camino Real
Mountain View, CA 94040-2833
Phone: (650) 934-7808
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A72927 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence A72927 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A72927 (CA)

Record details

NPI number1669534467
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 15, 2006
Last updated in NPPESFebruary 25, 2021
Certification dateFebruary 25, 2021
Mailing address325 Distel Cir, Los Altos, CA 94022-1408

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Other providers in Mountain View