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

Marek Banas, DO

Individual provider Emergency Medicine Physician · NPI 1467727297

Marek Banas, DO practises Emergency Medicine in Olympia Fields, Illinois. Graduated from Lincoln Memorial University Medical Department in 2012, 14 years ago. Practices with Vallejo Emergency Physicians Medical Group Inc, an 11-clinician group and accepts Medicare assignment. Licensed in California and Illinois.

Years since qualifying
14
Trained at
Lincoln Memorial University Medical Department
Licensed in
CA, IL
In the registry since
2012
Specialties on file
2
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

20201 Crawford Ave
Olympia Fields, IL 60461-1010 Not confirmed with CMS for 10 years — call before visiting
Phone: (708) 747-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 20A14423 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036.138890 (IL)

Record details

NPI number1467727297
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 13, 2012
Last updated in NPPESJune 23, 2016

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolLINCOLN MEMORIAL UNIVERSITY MEDICAL DEPARTMENT
Graduated 2012 (14 years in practice)
Group practice Vallejo Emergency Physicians Medical Group Inc — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients501
Services billed 769 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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. Those with a page here are linked.

  • Sutter Solano Medical Center Hospital · Vallejo, CA
  • Ucsf Health Saint Francis Hospital Hospital · San Francisco, CA
  • Ucsf Health St. Mary'S Hospital Hospital · San Francisco, CA

Colleagues at Vallejo Emergency Physicians Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 11 clinicians in the practice; 5 are shown here.

Other providers in Olympia Fields