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

Individual provider Psychiatry Physician · NPI 1366079915

Robert Grenn, MD is a Psychiatry Physician in Caro, Michigan. Practices as a sole proprietor. Licensed in Michigan.

Licensed in
MI
In the registry since
2020
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

2040 Chambers Rd
Caro, MI 48723-9240
Phone: (989) 673-3191
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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 4301508925 (MI)

Record details

NPI number1366079915
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 24, 2020
Last updated in NPPESApril 11, 2026
Certification dateApril 11, 2026
Mailing address2040 Chambers Rd, Caro, MI 48723-9240

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