NPPES file of Aug 9, 2026

Michael E. Flisak, MD

Diagnostic Radiology Physician · Oak Lawn, IL

Michael E. Flisak, MD is a diagnostic radiology physician with a practice address in Oak Lawn, Illinois, and NPI 1427032267, issued on Dec 5, 2005. Check the license (Illinois 036057388, 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
1427032267
Name
Michael E. Flisak
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
036057388 IL
Self-reported in NPPES; status is on the state search
Practice location
4440 W 95TH St, Oak Lawn, IL 60453
Phone
(708) 684-5520
Enumerated
Dec 5, 2005
Record last updated
Apr 3, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicaid ID
036057388 IL
Medicare enrollment
Enrolled (PECOS I20050303000340); accepts Medicare assignment
Medical or professional school
Loyola University Of Chicago, Stritch School Of Medicine, 1977
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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Also registered at 4440 W 95TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nadia Abdessalam, FNP-BCFamily Nurse Practitioner1356888283
  2. Akram Abdoue, M.D.Anesthesiology Physician1992752489
  3. Ahmad Abdulla, MDEmergency Medicine Physician1467202556
  4. Joseph Abraham, CRNACertified Registered Nurse Anesthetist1831653401
  5. Katherine Absalon, MOT, OTR/LOccupational Therapist1457753436
  6. Tassneem Abu-Rezeq, DNP, APRN, CPNP-ACPediatric Nurse Practitioner1831904663

Verify Michael E. Flisak 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 036057388
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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35% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024

33 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.

  1. Michael Flisak33
  2. Specialty average51

Most prescribed

  1. Mounjaro11 claims

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 practice group's MIPS final score for 2023 (Medicare payment program): 78.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score75.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Bills Medicare through one group practice

  1. Imaging Associates OF Indiana, PCHarvey, IL

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

Michael E. Flisak among 1,874 diagnostic radiology physician records in Illinois

Michael E. Flisak, MD is one of 1,874 diagnostic radiology physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 89% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1977 · median 2004 among the 1,201 with a school on file
  • Record last updated2015 · 43% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

41 diagnostic radiology physician records list a practice address in Oak Lawn

They are 41 of the 2,993 NPPES records with a practice address in Oak Lawn, and 1,874 diagnostic radiology physician records in Illinois.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Saagarappillai Asokan, MDOak Lawn, IL 604531376527127
  2. Frederick Fanapour, MDOak Lawn, IL 604531407830243
  3. Nihal Gooneratne, MDOak Lawn, IL 604531093790438
  4. George Hallenbeck, MDOak Lawn, IL 604531912981762
  5. Richard Heller, MDOak Lawn, IL 604531477537215
  6. Glenn Henrikson, DOOak Lawn, IL 604531275517013
  7. Elizabeth Holland, MDOak Lawn, IL 604531538144977
  8. Chong Kim, MDOak Lawn, IL 604531649257684

Common questions

What is Michael E. Flisak, MD's NPI number?

Michael E. Flisak, MD's National Provider Identifier (NPI) is 1427032267, issued on Dec 5, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Michael E. Flisak, MD located?

The NPPES record lists a practice address at 4440 W 95TH St, Oak Lawn, IL, 60453. Phone: (708) 684-5520. Providers update this record themselves, so call before visiting.

How can I verify Michael E. Flisak, MD's license?

NPPES lists Illinois license number 036057388, 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 Michael E. Flisak, MD prescribe under Medicare Part D?

In 2024, Michael E. Flisak, MD had 33 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.

What is Michael E. Flisak, MD's MIPS final score?

The 2023 MIPS final score is 78.8 of 100, reported for the practice group. 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.