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

Dr. Katherine Rebecca Exten, MD

Individual provider Internal Medicine Physician · NPI 1982996237

Dr. Katherine Rebecca Exten, MD is a Medical Oncology in Mansfield, Ohio. Graduated from Ohio State University College of Medicine in 2011, 15 years ago. Practices with American Oncology Partners PA, a 383-clinician group and accepts Medicare assignment. Licensed in Illinois and Ohio.

Years since qualifying
15
Trained at
Ohio State University College of Medicine
Licensed in
IL, OH
In the registry since
2011
Specialties on file
3
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

335 Glessner Ave
Mansfield, OH 44903-2269
Phone: (419) 756-2003
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 35131800 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036.134806 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1982996237
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 4, 2011
Last updated in NPPESJanuary 25, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Medical schoolOHIO STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice American Oncology Partners Pa — 383 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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