Zbigniew M. Ciechanowski, M.D.
Internal Medicine Physician · St Charles, IL
Zbigniew M. Ciechanowski, M.D. is an internal medicine physician with a practice address in St Charles, Illinois, and NPI 1467452573, issued on Jul 29, 2005. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Zbigniew M. Ciechanowski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 2020 Dean St, St Charles, IL 60174
- Phone
- (630) 513-0298
- Enumerated
- Jul 29, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (630) 578-6701
- Medicaid ID
- 7316904081 IL
- Medicare enrollment
- Enrolled (PECOS I20040806001271); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Zbigniew M. Ciechanowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,180 Medicare Part D claims for 177 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 13 claims were for opioids.
Most prescribed
- Amlodipine Besylate101 claims
- Metoprolol Succinate90 claims
- Losartan Potassium87 claims
- Atorvastatin Calcium78 claims
- Rosuvastatin Calcium72 claims
- Levothyroxine Sodium67 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.
Zbigniew M. Ciechanowski among 7,238 internal medicine physician records in Illinois
Zbigniew M. Ciechanowski, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% 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 updated2026 · 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).
Internal Medicine Physician providers in Illinois
There are 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in St Charles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marissa Jama, DOSt Charles, IL 601741962146258
- Scott McNaughton, M.D.St Charles, IL 601741073510335
- Laura Tagle, MDSt Charles, IL 601741053440008
- Catherine Thomas, M.D.St Charles, IL 601741295785756
- Vivian Vanroekel, M.D.St Charles, IL 601741487657524
- Lawrence Yoo, MDSt Charles, IL 601741912167669
- Lori Zimmers, M.D.St Charles, IL 601741588734818
- Massarat Bala, M.D.Schaumburg, IL 601731730196833
Common questions
What is Zbigniew M. Ciechanowski, M.D.'s NPI number?
Zbigniew M. Ciechanowski, M.D.'s National Provider Identifier (NPI) is 1467452573, issued on Jul 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Zbigniew M. Ciechanowski, M.D. located?
The NPPES record lists a practice address at 2020 Dean St, St Charles, IL, 60174. Phone: (630) 513-0298. Providers update this record themselves, so call before visiting.
How can I verify Zbigniew M. Ciechanowski, M.D.'s license?
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 Zbigniew M. Ciechanowski, M.D. prescribe under Medicare Part D?
In 2024, Zbigniew M. Ciechanowski, M.D. had 2,180 Medicare Part D claims for 177 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.