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

Dr. Ronald Lewis Ruecker, MD

Individual provider Internal Medicine Physician · NPI 1275565806

Dr. Ronald Lewis Ruecker, MD is an Internal Medicine Physician in Decatur, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
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

2 Memorial Dr Ste 101
Decatur, IL 62526-1589
Phone: (217) 875-2640
Fax: (217) 875-3101
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (IL)
Gastroenterology Physician Taxonomy 207RG0100X (IL)

Record details

NPI number1275565806
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 6, 2006
Last updated in NPPESSeptember 11, 2025

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