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

Dr. Mary Jo Johnstone, MD

Individual provider Emergency Medicine Physician · NPI 1467717348

Dr. Mary Jo Johnstone, MD is an Emergency Medicine Physician in Mineola, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2012
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

259 1st St Emergency Dept
Mineola, NY 11501-3957
Phone: (516) 663-0333
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 265752 (NY)

Record details

NPI number1467717348
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 7, 2012
Last updated in NPPESJuly 7, 2012
Mailing address259 1st St, Emergency Department, Mineola, NY 11501-3957

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