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

Jeffrey L Greenwald, MD

Individual provider Internal Medicine Physician · NPI 1326023466

Jeffrey L Greenwald, MD is a Hospitalist in Boston, Massachusetts. Graduated from Harvard Medical School in 1994, 32 years ago. Practices with Massachusetts General Physicians Organization Inc, a 3,484-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
32
Trained at
Harvard Medical School
Licensed in
MA
In the registry since
2005
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

50 Staniford St Ste 503B
Boston, MA 02114-2517
Phone: (617) 643-6408
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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 159405 (MA)

Record details

NPI number1326023466
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 13, 2005
Last updated in NPPESNovember 9, 2010

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1994 (32 years in practice)
Group practice Massachusetts General Physicians Organization Inc — 3484 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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