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

Dr. Marek J Lisek, DO

Individual provider Internal Medicine Physician · NPI 1932858594

Dr. Marek J Lisek, DO is an Internal Medicine in Beloit, Wisconsin. Graduated from Marian University College of Osteopathic Medicine in 2022, 4 years ago. Practices with Beloit Health System Inc, a 141-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
4
Trained at
Marian University College of Osteopathic Medicine
Licensed in
WI
In the registry since
2022
Specialties on file
3
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 Partly verified

Some contact details are missing from the federal record.

Beloit Health System 1969 W Hart Rd
Beloit, WI 53511-2230
Phone: (608) 363-5971
Fax: (608) 363-5737
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 81395-21 (WI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 81395-21 (WI)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1932858594
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 21, 2022
Last updated in NPPESAugust 13, 2025
Certification dateMay 14, 2024
Mailing addressBeloit Health System Inc, 1969 W Hart Road, Beloit, WI 53511-2230

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolMARIAN UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2022 (4 years in practice)
Group practice Beloit Health System Inc — 141 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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