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
Mailing address830 Chalkstone Ave, Providence, RI 02908-4734

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