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

Individual provider Psychiatry Physician · NPI 1477565901

Dr. Robert Gm Johnston, MD is a Psychiatry Physician in Providence, Rhode Island. Licensed in Massachusetts and Rhode Island. Registered with an NPI since 2006.

Licensed in
MA, RI
In the registry since
2006
Specialties on file
4
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

830 Chalkstone Ave
Providence, RI 02908-4734
Phone: (401) 273-7100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 5548 (RI)
Psychiatry Physician Taxonomy 2084P0800X · Licence 37671 (MA)
Geriatric Psychiatry Physician Taxonomy 2084P0805X · Licence 5548 (RI)
Geriatric Psychiatry Physician Taxonomy 2084P0805X · Licence 37671 (MA)

Record details

NPI number1477565901
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 13, 2006
Last updated in NPPESApril 18, 2014

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