Robert Alan Winiecki, M.D.
Internal Medicine Physician · Lisle, IL
Robert Alan Winiecki, M.D. is an internal medicine physician with a practice address in Lisle, Illinois, and NPI 1215985155, issued on May 4, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert Alan Winiecki
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 1500 Eisenhower LN, Lisle, IL 60532
- Phone
- (630) 964-1844
- Enumerated
- May 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 964-1977
- Medicare enrollment
- Enrolled (PECOS I20070717000118); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 1500 Eisenhower LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Alan Winiecki 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
34% more Medicare Part D claims than the average internal medicine physician in 2024
4,268 Medicare Part D claims for 380 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 12 claims were for opioids.
Most prescribed
- Losartan Potassium280 claims
- Atorvastatin Calcium259 claims
- Levothyroxine Sodium229 claims
- Amlodipine Besylate211 claims
- Hydrochlorothiazide208 claims
- Metformin Hcl181 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.
Robert Alan Winiecki among 7,238 internal medicine physician records in Illinois
Robert Alan Winiecki, 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 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
- Graduated1985 · 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).
16 internal medicine physician records list a practice address in Lisle
They are 16 of the 610 NPPES records with a practice address in Lisle, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Lisle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wa'El Abdo, M.D.Lisle, IL 605321740284074
- Alin Abraham, M.D.Lisle, IL 605321316101181
- Latha Arla, DOLisle, IL 605321578548921
- Dennis Asensio, M.D.Lisle, IL 605321891770624
- Christina Bratis, M.D.Lisle, IL 605321750593182
- Jean Houlihan, MDWarrenville, IL 605321952398885
- Zvezdana Ilic Bogojevic, M.D.Lisle, IL 605321104159896
- Jennifer Kassir, M.D.Lisle, IL 605321528214715
Common questions
What is Robert Alan Winiecki, M.D.'s NPI number?
Robert Alan Winiecki, M.D.'s National Provider Identifier (NPI) is 1215985155, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Alan Winiecki, M.D. located?
The NPPES record lists a practice address at 1500 Eisenhower LN, Lisle, IL, 60532. Phone: (630) 964-1844. Providers update this record themselves, so call before visiting.
How can I verify Robert Alan Winiecki, 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 Robert Alan Winiecki, M.D. prescribe under Medicare Part D?
In 2024, Robert Alan Winiecki, M.D. had 4,268 Medicare Part D claims for 380 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.