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

Mark R Johnston, MD

Individual provider Family Medicine Physician · NPI 1619175460

Mark R Johnston, MD is a Family Medicine Physician in New Rochelle, New York. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
In the registry since
2007
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 Partly verified

Some contact details are missing from the federal record.

Westchester County Dept OF Health 145 Huguenot Street
New Rochelle, NY 10801-5234
Phone: (914) 813-5237
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 149047 (NY)
Public Health & General Preventive Medicine Physician Taxonomy 2083P0901X · Licence 149047 (NY)

Record details

NPI number1619175460
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 3, 2007
Last updated in NPPESApril 24, 2017

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