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

Individual provider Medical Oncology Physician · NPI 1477659126

Karen L. Hoelzer, MD is a Medical Oncology Physician in Springfield, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
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

900 N 1st St
Springfield, IL 62702-3749
Phone: (217) 528-7541
Fax: (217) 527-2830
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 036-070406 (IL)

Record details

NPI number1477659126
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 16, 2006
Last updated in NPPESJuly 31, 2014

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