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

Dr. Margaret Johnstone, MD

Individual provider Diagnostic Radiology Physician · NPI 1740221159

Dr. Margaret Johnstone, MD is a Diagnostic Radiology Physician in Stony Brook, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

University Hospital L4
Stony Brook, NY 11794-0001
Phone: (631) 444-6920
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 114513 (NY)

Record details

NPI number1740221159
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 8, 2006
Last updated in NPPESJuly 8, 2007
Mailing addressPo Box 1559, Stony Brook, NY 11790-0989

Other providers in Stony Brook