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

Jonathan Michael Tomasko, MD

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1184882185

Jonathan Michael Tomasko, MD practises Thoracic Surgery in Winfield, Illinois. Graduated from Albany Medical College of Union University in 2008, 18 years ago. Practices with The Milton S Hershey Medical Center Physicians Group, a 1,595-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Illinois and Pennsylvania.

Years since qualifying
18
Trained at
Albany Medical College of Union University
Licensed in
IL, PA
In the registry since
2008
Specialties on file
2
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

25 N Winfield Rd
Winfield, IL 60190
Phone: (630) 933-4480
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 676 N. Saint Clair, Chicago, IL 60611 — (312) 695-9726
  • 676 N. Saint Clair, Chicago, IL 60611 — (312) 695-9726
  • 351 Delnor Dr, Geneva, IL 60134-4220 — (630) 933-4480
  • 500 University Dr, Hershey, PA 17033-2360 — (717) 531-8521

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 036.137428 (IL)
Surgery Physician Taxonomy 208600000X · Licence MT193221 (PA)

Record details

NPI number1184882185
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 27, 2008
Last updated in NPPESAugust 3, 2018

Medicare enrollment

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

Medicare specialtyTHORACIC SURGERY
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 2008 (18 years in practice)
Group practice The Milton S Hershey Medical Center Physicians Group — 1595 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 artery bypass graft (CABG) 20 times · 67th percentile

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 patients32
Services billed 74 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Travel and Lodging $2,379 12 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $1,908 34 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 The Milton S Hershey Medical Center Physicians Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1595 clinicians in the practice; 12 are shown here.

Other providers in Winfield