NPPES file of Aug 9, 2026

Mark Charles Korpics, MD

Radiation Oncology Physician · Chicago, IL

Mark Charles Korpics, MD is a radiation oncology physician with a practice address in Chicago, Illinois, and NPI 1407382526, issued on May 10, 2017. Check the license (Illinois 036158845, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407382526
Name
Mark Charles Korpics
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
036158845 IL
01091271A IN
Self-reported in NPPES; status is on the state search
Practice location
1740 W Taylor St Ste 2600, Chicago, IL 60612
Phone
(312) 996-3631
Enumerated
May 10, 2017
Record last updated
Jul 9, 2025
Medicare enrollment
Enrolled (PECOS I20250715003369); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 2017
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Mark Charles Korpics in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036158845
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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67% fewer Medicare Part D claims than the average radiation oncology physician in 2024

44 Medicare Part D claims for 27 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Mark Korpics44
  2. Specialty average134

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 97.7 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score75.4
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. The Board OF Trustees OF The University OF IllinoisChicago, IL
  2. University OF ChicagoCrown Point, IN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Charles Korpics among 277 radiation oncology physician records in Illinois

Mark Charles Korpics, MD is one of 277 radiation oncology physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.

  • NPI issued2017 · 81% of these records are older, 16% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2017 · median 2004 among the 184 with a school on file
  • Record last updated2025 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Illinois

There are 277 radiation oncology physician records in Illinois.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Ross Abrams, M.D.Chicago, IL 606121356317564
  2. Sobiya Ansari, M.D.Chicago, IL 606121336554666
  3. Philip Blumenfeld, M.D.Chicago, IL 606121417397449
  4. Nathaniel Camden, MDChicago, IL 606121629502208
  5. Thomas Kim, M.D.Chicago, IL 606121932466208
  6. Gaurav Marwaha, M.D.Chicago, IL 606121669798062
  7. Christian Olortegui, M.D.Chicago, IL 606121033564018
  8. Neilayan Sen, M.D.Chicago, IL 606121407101314

Common questions

What is Mark Charles Korpics, MD's NPI number?

Mark Charles Korpics, MD's National Provider Identifier (NPI) is 1407382526, issued on May 10, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Mark Charles Korpics, MD located?

The NPPES record lists a practice address at 1740 W Taylor St Ste 2600, Chicago, IL, 60612. Phone: (312) 996-3631. Providers update this record themselves, so call before visiting.

How can I verify Mark Charles Korpics, MD's license?

NPPES lists Illinois license number 036158845, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark Charles Korpics, MD prescribe under Medicare Part D?

In 2024, Mark Charles Korpics, MD had 44 Medicare Part D claims for 27 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

What is Mark Charles Korpics, MD's MIPS final score?

The 2023 MIPS final score is 97.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.