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

John Michael Gansner, MD/PHD

Individual provider Internal Medicine Physician · NPI 1952621831

John Michael Gansner, MD/PHD is a Hematology in Boston, Massachusetts. Graduated from Washington University School of Medicine in 2010, 16 years ago. Practices with Dana-Farber Cancer Institute, Inc, a 668-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
16
Trained at
Washington University School of Medicine
Licensed in
MA
In the registry since
2010
Specialties on file
3
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Practice location Address checks out

450 Brookline Ave
Boston, MA 02215-5418
Phone: (617) 632-3779
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 265408 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 244635 (MA)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 244635 (MA)

Record details

NPI number1952621831
Entity typeIndividual (Type 1)
GenderMale
Credentials MD/PHD
Sole proprietorNo
NPI enumeratedJune 2, 2010
Last updated in NPPESMay 31, 2016

Medicare enrollment

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

Medicare specialtyHEMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Dana-Farber Cancer Institute, Inc. — 668 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Boston