Sean Michael Wrenn, M.D.
Surgical Oncology Physician · Chicago, IL
Sean Michael Wrenn, M.D. is a surgical oncology physician with a practice address in Chicago, Illinois, and NPI 1831431261, issued on Mar 24, 2013. Check the license (Illinois 036-153599, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sean Michael Wrenn
- Credential
- M.D.
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License numbers
- 036-153599 IL
036.153599 IL
278947 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1725 W Harrison St Ste 250, Chicago, IL 60612
- Phone
- (312) 942-5500
- Enumerated
- Mar 24, 2013
- Record last updated
- Apr 5, 2022
- Fax
- (312) 563-2080
- Medicare enrollment
- Enrolled (PECOS I20200930000176); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 71 in Illinois → Look up another NPI →
Also registered at 1725 W Harrison St Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saher Baig, PHYSICIAN ASSISTANTPhysician Assistant1093927840
- Sanford Baim, M.D.Rheumatology Physician1841227311
- Alice Choi, APRNGerontology Nurse Practitioner1770219982
- Sara Cohen, MDEndocrinology, Diabetes & Metabolism Physician1518413285
- Sumeet Jain, M.D. (MAY 2014)Endocrinology, Diabetes & Metabolism Physician1144648023
- Roselyn Cristelle Mateo, M.D.Endocrinology, Diabetes & Metabolism Physician1841420379
Verify Sean Michael Wrenn 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 036-153599Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average surgical oncology physician in 2024
115 Medicare Part D claims for 50 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Levothyroxine Sodium58 claims
- Alprazolam12 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
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean Michael Wrenn among 71 surgical oncology physician records in Illinois
Sean Michael Wrenn, M.D. is one of 71 surgical oncology physician records with a practice address in Illinois. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 18% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2013 · median 2005 among the 55 with a school on file
- Record last updated2022 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in Illinois
There are 71 surgical oncology physician records in Illinois.
All 71 in Illinois → Every provider in Chicago → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Katherina Boettge, MDChicago, IL 606121427686963
- Jeffrey Bork, M.D.Chicago, IL 606121669482378
- Matthew Dixon, M.D.Chicago, IL 606121083842009
- Keith DookeranChicago, IL 606121851494835
- Aslam Ejaz, M.D.Chicago, IL 606121275857120
- Taylor Gipson, PA-CChicago, IL 606121184428575
- Stuart LipnickChicago, IL 606121831100098
- Cristina Odonoghue, M.D., M.P.H.Chicago, IL 606121508032715
Common questions
What is Sean Michael Wrenn, M.D.'s NPI number?
Sean Michael Wrenn, M.D.'s National Provider Identifier (NPI) is 1831431261, issued on Mar 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Sean Michael Wrenn, M.D. located?
The NPPES record lists a practice address at 1725 W Harrison St Ste 250, Chicago, IL, 60612. Phone: (312) 942-5500. Providers update this record themselves, so call before visiting.
How can I verify Sean Michael Wrenn, M.D.'s license?
NPPES lists Illinois license number 036-153599, 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 Sean Michael Wrenn, M.D. prescribe under Medicare Part D?
In 2024, Sean Michael Wrenn, M.D. had 115 Medicare Part D claims for 50 beneficiaries; the average among surgical oncology physician prescribers was 87. 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.