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

Katherine T Johnston, MD, MA, MSC

Individual provider Internal Medicine Physician · NPI 1164469763

Katherine T Johnston, MD, MA, MSC is an Internal Medicine Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MA — Master of Arts
A graduate arts degree.

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Practice location Address checks out

165 Cambridge St Ste 501
Boston, MA 02114-2759
Phone: (617) 726-4900
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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 226586 (MA)

Record details

NPI number1164469763
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , MA , MSC
Sole proprietorNo
NPI enumeratedJune 1, 2006
Last updated in NPPESJuly 7, 2025
Certification dateJuly 7, 2025

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