Janusz Dudek, MD
Internal Medicine Physician · Chicago, IL
Janusz Dudek, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1073531570, issued on Jul 17, 2006. Check the license (Illinois 036-090378, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Janusz Dudek
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-090378 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5528 N Milwaukee Ave, Chicago, IL 60630
- Phone
- (773) 631-2015
- Enumerated
- Jul 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041109000082); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 5528 N Milwaukee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marta Dudek, M.D.Internal Medicine Physician1083666432
Verify Janusz Dudek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-090378Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
7,849 Medicare Part D claims for 540 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 225 claims were for opioids.
Most prescribed
- Atorvastatin Calcium508 claims
- Amlodipine Besylate375 claims
- Metoprolol Succinate366 claims
- Levothyroxine Sodium285 claims
- Rosuvastatin Calcium269 claims
- Losartan Potassium266 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 MIPS final score for 2023 (Medicare payment program): 94.1 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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $18.74
1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janusz Dudek among 7,238 internal medicine physician records in Illinois
Janusz Dudek, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1984 · median 2003 among the 3,580 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Omar Alsamman, M.D.Chicago, IL 606301457319808
- Miguel Antonatos, M.D.Chicago, IL 606301912285081
- Cory Chen, MDChicago, IL 606301851394548
- Marta Dudek, M.D.Chicago, IL 606301083666432
- Victor Forys, M.D.Chicago, IL 606301669585857
- Bruce Goldenberg, MDChicago, IL 606301528172236
- Peter Lim, DOChicago, IL 606301316477995
- Sanjoy Majumdar, MDChicago, IL 606301467495648
Common questions
What is Janusz Dudek, MD's NPI number?
Janusz Dudek, MD's National Provider Identifier (NPI) is 1073531570, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Janusz Dudek, MD located?
The NPPES record lists a practice address at 5528 N Milwaukee Ave, Chicago, IL, 60630. Phone: (773) 631-2015. Providers update this record themselves, so call before visiting.
How can I verify Janusz Dudek, MD's license?
NPPES lists Illinois license number 036-090378, 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 Janusz Dudek, MD prescribe under Medicare Part D?
In 2024, Janusz Dudek, MD had 7,849 Medicare Part D claims for 540 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Janusz Dudek, MD's MIPS final score?
The 2023 MIPS final score is 94.1 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.