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

Individual provider Internal Medicine Physician · NPI 1346971546

Zachary Kassir is a Hematology/Oncology in Boston, Massachusetts. Graduated from University of Pittsburgh School of Medicine in 2022, 4 years ago. Practices with Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc, a 1,676-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
4
Trained at
University of Pittsburgh School of Medicine
Licensed in
MA
In the registry since
2022
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Practice location Address checks out

330 Brookline Ave
Boston, MA 02215-5400
Phone: (330) 933-8070
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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 1024498 (MA)

Record details

NPI number1346971546
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 20, 2022
Last updated in NPPESAugust 6, 2025
Certification dateAugust 6, 2025

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc — 1676 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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