Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Jonathan Tsai

Individual provider Hospitalist Physician · NPI 1497252522

Jonathan Tsai is a Hospitalist in San Leandro, California. Qualified in 2018, 8 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
8
Licensed in
CA, NY
In the registry since
2018
Specialties on file
2
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Practice location Address checks out

2500 Merced St
San Leandro, CA 94577-4201
Phone: (510) 514-2872
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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 311648 (NY)
Hospitalist Physician Taxonomy 208M00000X · Licence 180276 (CA)

Record details

NPI number1497252522
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 6, 2018
Last updated in NPPESAugust 21, 2023
Certification dateAugust 21, 2023

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients24
Services billed 33 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Permanente Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10941 clinicians in the practice; 12 are shown here.

Other providers in San Leandro