Diana O. Iwanik, MD
Diagnostic Radiology Physician · Chicago, IL
Diana O. Iwanik, MD is a diagnostic radiology physician with a practice address in Chicago, Illinois, and NPI 1902824915, issued on Jul 17, 2006. Check the license (Illinois 036072868, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Diana O. Iwanik
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 036072868 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7435 W. Talcott Avenue, Chicago, IL 60631
- Phone
- (773) 990-7684
- Enumerated
- Jul 17, 2006
- Record last updated
- Mar 31, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (773) 792-5124
- Medicaid IDs
- 036072868-2 IL
036072868 IL - Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,874 in Illinois → Look up another NPI →
Verify Diana O. Iwanik 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 036072868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
20 Medicare Part D claims, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.
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.
Diana O. Iwanik among 1,874 diagnostic radiology physician records in Illinois
Diana O. Iwanik, 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2021 · 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).
Diagnostic Radiology Physician providers in Illinois
There are 1,874 diagnostic radiology physician records in Illinois.
All 1,874 in Illinois → Every provider in Chicago → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Warren Brandwein, M.D.Chicago, IL 606311255537858
- Ryan Foley, M.D.Chicago, IL 606311497982334
- B Kesala, M.D.Chicago, IL 606311578597779
- Kevin O'Brien, MDChicago, IL 606311346686474
- James Pillars, M.D.Chicago, IL 606311558380923
- Ozair RahmanChicago, IL 606311417483090
- Haran Rajeswaran, MDChicago, IL 606311790208205
- Myra Rapoport, M.D.Chicago, IL 606311396760203
Common questions
What is Diana O. Iwanik, MD's NPI number?
Diana O. Iwanik, MD's National Provider Identifier (NPI) is 1902824915, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana O. Iwanik, MD located?
The NPPES record lists a practice address at 7435 W. Talcott Avenue, Chicago, IL, 60631. Phone: (773) 990-7684. Providers update this record themselves, so call before visiting.
How can I verify Diana O. Iwanik, MD's license?
NPPES lists Illinois license number 036072868, 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 Diana O. Iwanik, MD prescribe under Medicare Part D?
In 2024, Diana O. Iwanik, MD had 20 Medicare Part D claims; the average among diagnostic radiology physician prescribers was 51. 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.