George Czajkowski, M.D.
Internal Medicine Physician · Chicago, IL
George Czajkowski, M.D. is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1821021007, issued on Jul 9, 2006. Check the license (Illinois 036-069503, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- George Czajkowski
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-069503 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4025 N Western Ave, Chicago, IL 60618
- Phone
- (773) 275-7700
- Enumerated
- Jul 9, 2006
- Record last updated
- Dec 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100107000451); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4025 N Western Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify George Czajkowski 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 036-069503Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,206 Medicare Part D claims for 712 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 262 claims were for opioids.
Most prescribed
- Atorvastatin Calcium840 claims
- Lisinopril552 claims
- Amlodipine Besylate487 claims
- Metformin Hcl343 claims
- Metoprolol Succinate329 claims
- Losartan Potassium309 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.
Bills Medicare through one group practice
- Advocate Health And Hospitals CorporationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (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 2,867 in Chicago → All 7,238 in Illinois → Every provider in Chicago →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is George Czajkowski, M.D.'s NPI number?
George Czajkowski, M.D.'s National Provider Identifier (NPI) is 1821021007, issued on Jul 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George Czajkowski, M.D. located?
The NPPES record lists a practice address at 4025 N Western Ave, Chicago, IL, 60618. Phone: (773) 275-7700. Providers update this record themselves, so call before visiting.
How can I verify George Czajkowski, M.D.'s license?
NPPES lists Illinois license number 036-069503, 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 George Czajkowski, M.D. prescribe under Medicare Part D?
In 2024, George Czajkowski, M.D. had 10,206 Medicare Part D claims for 712 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.