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

Dr. Michael Thomas Flisak, DO

Individual provider Cardiovascular Disease Physician · NPI 1548426943

Dr. Michael Thomas Flisak, DO is registered under Cardiovascular Disease (Cardiology) in Michigan City, Indiana. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2005, 21 years ago. Practices with Ascension Medical Group-Southeast Wisconsin Inc, a 555-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois, Indiana and Wisconsin.

Years since qualifying
21
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL, IN, WI
In the registry since
2008
Specialties on file
4
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

3500 Franciscan Way Ste 400
Michigan City, IN 46360-0021
Phone: (219) 878-8200
Fax: (219) 877-8331
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (3)

  • 3231 Euclid Ave Ste 201, Berwyn, IL 60402-3472 — (708) 783-2055
  • 11560 S Kedzie Ave Ste 100, Merrionette Park, IL 60803-4517 — (708) 824-1114
  • 13011 S 104th Ave, Palos Park, IL 60464-1506 — (708) 478-3600

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence 02005248 (IN)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 036118827 (IL)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 55811 (WI)
Interventional Cardiology Physician Taxonomy 207RI0011X · Licence 036118827 (IL)

Record details

NPI number1548426943
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 5, 2008
Last updated in NPPESMarch 5, 2019

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2005 (21 years in practice)
Group practice Ascension Medical Group-Southeast Wisconsin Inc — 555 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Coronary angioplasty and stenting 27 times · 60th percentile
Leg revascularization (restoring blood flow) 1–10 times
Pacemaker insertion or repair 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 patients564
Services billed 976 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $60 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Ascension Medical Group-Southeast Wisconsin Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 555 clinicians in the practice; 12 are shown here.

Other providers in Michigan City