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

Cathy L. Clausen, MD

Individual provider Radiation Oncology Physician · NPI 1073526091

Cathy L. Clausen, MD is a Radiation 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.

See every abbreviation used in this directory →

Practice location Address checks out

800 E Carpenter St
Springfield, IL 62769-0001
Phone: (217) 525-5666
Fax: (217) 757-6754
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X (IL)

Record details

NPI number1073526091
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 14, 2006
Last updated in NPPESApril 1, 2008

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