Thomas Roy Witt, MD
Surgical Oncology Physician · Chicago, IL
Thomas Roy Witt, MD is a surgical oncology physician with a practice address in Chicago, Illinois, and NPI 1669560314, issued on Oct 10, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thomas Roy Witt
- Credential
- MD
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- Practice location
- 1725 W Harrison, Chicago, IL 60612
- Phone
- (312) 942-2302
- Enumerated
- Oct 10, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (312) 563-2228
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 71 in Illinois → Look up another NPI →
Also registered at 1725 W Harrison
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Roy Witt 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
49% fewer Medicare Part D claims than the average surgical oncology physician in 2024
44 Medicare Part D claims, against an average of 87 among the 1,237 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.
Thomas Roy Witt among 71 surgical oncology physician records in Illinois
Thomas Roy Witt, MD 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 69% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 77% of these records are
- Record last updated2025 · 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 Thomas Roy Witt, MD's NPI number?
Thomas Roy Witt, MD's National Provider Identifier (NPI) is 1669560314, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Roy Witt, MD located?
The NPPES record lists a practice address at 1725 W Harrison, Chicago, IL, 60612. Phone: (312) 942-2302. Providers update this record themselves, so call before visiting.
How can I verify Thomas Roy Witt, MD'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 Thomas Roy Witt, MD prescribe under Medicare Part D?
In 2024, Thomas Roy Witt, MD had 44 Medicare Part D claims; 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.