Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John Jun-Tsung Tsay, MD

Individual provider Emergency Medicine Physician · NPI 1164632691

Dr. John Jun-Tsung Tsay, MD practises Internal Medicine in Boston, Massachusetts. Qualified in 2005, 21 years ago. Practices with Hebrew Rehabilitation Center, a 49-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
21
Licensed in
MA
In the registry since
2007
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

1400 Vfw Pkwy
Boston, MA 02132 Not confirmed with CMS for 12 years — call before visiting
Phone: (857) 203-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 250564 (MA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 250564 (MA)
Nephrology Physician Taxonomy 207RN0300X · Licence 250564 (MA)

Record details

NPI number1164632691
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 23, 2007
Last updated in NPPESJanuary 28, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Hebrew Rehabilitation Center — 49 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients26
Services billed 59 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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.

Colleagues at Hebrew Rehabilitation Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 49 clinicians in the practice; 12 are shown here.

Other providers in Boston