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

Dr. Benjamin Tsai, MD

Individual provider Internal Medicine Physician · NPI 1841533502

Dr. Benjamin Tsai, MD is an Internal Medicine in Berkeley, California. Graduated from University of California, San Diego School of Medicine in 2013, 13 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
13
Trained at
University of California, San Diego School of Medicine
Licensed in
CA
In the registry since
2013
Specialties on file
2
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

2450 Ashby Ave
Berkeley, CA 94705-2067
Phone: (510) 204-4444
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4647 Zion Ave, San Diego, CA 92120-2507 — (619) 528-5435

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A132840 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 1841533502 (CA)

Record details

NPI number1841533502
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 1, 2013
Last updated in NPPESFebruary 17, 2021
Certification dateFebruary 17, 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 specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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