Richard F. Warren, MD
Medical Oncology Physician · Chicago, IL
Richard F. Warren, MD is a medical oncology physician with a practice address in Chicago, Illinois, and NPI 1013981349, issued on Feb 14, 2006. Check the license (Illinois 036078470, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Richard F. Warren
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 036078470 IL
18369 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2301 E 93RD St, Chicago, IL 60617
- Phone
- (773) 731-2982
- Enumerated
- Feb 14, 2006
- Record last updated
- Jul 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (773) 731-3328
- Medicaid ID
- 036078470 IL
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 182 in Illinois → Look up another NPI →
Also registered at 2301 E 93RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Richard F. Warren 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 036078470Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average medical oncology physician in 2024
127 Medicare Part D claims for 38 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole64 claims
- Potassium Chloride14 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.
Richard F. Warren among 182 medical oncology physician records in Illinois
Richard F. Warren, MD is one of 182 medical 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2019 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
All 182 in Illinois → Every provider in Chicago → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Nyambi Ebie, MDChicago, IL 606171548234883
- Kumar Batra, M.D.Chicago, IL 606121770891566
- Marta Batus, MDChicago, IL 606121003087768
- Mary Fidler, M.D.Chicago, IL 606121598960494
- Shweta Gupta, MDChicago, IL 606121376781252
- Michael Jelinek, M.D.Chicago, IL 606121720426513
- Katherine Kabaker, M.D.Chicago, IL 606121699951137
- Thomas Lad, M.D.Chicago, IL 606121972511632
Common questions
What is Richard F. Warren, MD's NPI number?
Richard F. Warren, MD's National Provider Identifier (NPI) is 1013981349, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard F. Warren, MD located?
The NPPES record lists a practice address at 2301 E 93RD St, Chicago, IL, 60617. Phone: (773) 731-2982. Providers update this record themselves, so call before visiting.
How can I verify Richard F. Warren, MD's license?
NPPES lists Illinois license number 036078470, 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 Richard F. Warren, MD prescribe under Medicare Part D?
In 2024, Richard F. Warren, MD had 127 Medicare Part D claims for 38 beneficiaries; the average among medical oncology physician prescribers was 703. 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.