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

Ronald James Grason, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1801060538

Ronald James Grason, MD is a Geriatric Medicine (Internal Medicine) Physician in Decatur, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2008
Specialties on file
2
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

357 W Decatur St
Decatur, IL 62522
Phone: (217) 428-8600
Fax: (217) 428-8600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X (IL)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X (IL)

Record details

NPI number1801060538
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 14, 2008
Last updated in NPPESApril 14, 2008
Mailing address357 W Decatur St, Decatur, IL 62522

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