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

William G Kaelin, MD

Individual provider Internal Medicine Physician · NPI 1093994493

William G Kaelin, MD is an Internal Medicine Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2007.

Licensed in
MA
In the registry since
2007
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

44 Binney Street Dana Farber Cancer Institute
Boston, MA 02115
Phone: (617) 632-3975
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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 57621 (MA)

Record details

NPI number1093994493
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 1, 2007
Last updated in NPPESNovember 1, 2007

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