Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Rachael Ziska, DO

Individual provider Internal Medicine Physician · NPI 1104204247

Rachael Ziska, DO practises Internal Medicine in Fitchburg, Wisconsin. Graduated from University of Minnesota Medical School in 2018, 8 years ago. Practices with Group Health Cooperative of South Central Wisconsin, a 234-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
8
Trained at
University of Minnesota Medical School
Licensed in
WI
In the registry since
2015
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3051 Cahill Main
Fitchburg, WI 53711-7109
Phone: (608) 661-7200
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 6950621 (WI)

Record details

NPI number1104204247
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 8, 2015
Last updated in NPPESOctober 11, 2018

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 2018 (8 years in practice)
Group practice Group Health Cooperative Of South Central Wisconsin — 234 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients153
Services billed 1,497 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Group Health Cooperative of South Central Wisconsin

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 234 clinicians in the practice; 12 are shown here.

Other providers in Fitchburg