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

Dr. Karolina Stack, MD

Individual provider Pediatrics Physician · NPI 1053842443

Dr. Karolina Stack, MD is a Pediatric Medicine in Oshkosh, Wisconsin. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2017, 9 years ago. Practices with Ascension Medical Group-Fox Valley Wisconsin, Inc, a 260-clinician group and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
9
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL, WI
In the registry since
2017
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

2700 W 9th Ave Ste 211
Oshkosh, WI 54904-7865
Phone: (920) 223-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 83243 (WI)
Pediatrics Physician Taxonomy 208000000X · Licence 1053842243 (IL)
Pediatrics Physician Taxonomy 208000000X · Licence 036.151998 (IL)

Record details

NPI number1053842443
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 27, 2017
Last updated in NPPESJune 30, 2025
Certification dateJune 30, 2025
Mailing address2700 W 9th Ave Ste 211, Oshkosh, WI 54904-7865

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Ascension Medical Group-Fox Valley Wisconsin, Inc — 260 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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