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

Zachary M Johnston, MD

Individual provider Internal Medicine Physician · NPI 1720449812

Zachary M Johnston, MD is an Internal Medicine Physician in Bethesda, Maryland. Licensed in Virginia. Registered with an NPI since 2016.

Licensed in
VA
In the registry since
2016
Specialties on file
2
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

4494 Palmer Rd N
Bethesda, MD 20889-2111
Phone: (717) 823-1216
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 0101262981 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101262981 (VA)

Record details

NPI number1720449812
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 16, 2016
Last updated in NPPESApril 15, 2024
Certification dateApril 15, 2024

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