Usman Zaheer, DO
Hematology & Oncology Physician · Romeoville, IL
Usman Zaheer, DO is a hematology & oncology physician with a practice address in Romeoville, Illinois, and NPI 1104319383, issued on Jun 12, 2018. Check the license (Illinois 036170030, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Usman Zaheer
- Credential
- DO
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 036170030 IL
Self-reported in NPPES; status is on the state search - Practice location
- 500 S Weber RD, Romeoville, IL 60446
- Phone
- (815) 773-7732
- Enumerated
- Jun 12, 2018
- Record last updated
- Jul 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20240724000456); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2018
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 500 S Weber RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Kiley, FNPFamily Nurse Practitioner1023512274
- Jayme Mitchell, PA-CPhysician Assistant1619622784
- Doris Okafor, M.D.Internal Medicine Physician1659512945
- Claudia Vera, MDInternal Medicine Physician1811966534
- Nikhil VijCritical Care Medicine Registered Nurse1912495391
- Tammy Zweeres, APNNurse Practitioner1255690574
Verify Usman Zaheer 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 036170030Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
422 Medicare Part D claims for 124 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 77 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen35 claims
- Eliquis32 claims
- Prednisone27 claims
- Anastrozole23 claims
- Letrozole21 claims
- Acyclovir19 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.
Industry payments in 2024: $1,353.41
62 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Prime Healthcare Illinois Medical Group LLCBourbonnais, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Usman Zaheer among 666 hematology & oncology physician records in Illinois
Usman Zaheer, DO is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 83% of them.
- NPI issued2018 · 83% of these records are older, 13% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2003 among the 461 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Illinois
There are 666 hematology & oncology physician records in Illinois.
All 666 in Illinois → Every provider in Romeoville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Simona Chivu, MDNew Lenox, IL 604511942416235
- Dario Villamar, M.D.New Lenox, IL 604511548791437
- Valentina Macrinici, M.D.Bolingbrook, IL 604401154581783
- Leela Rao, MDBolingbrook, IL 604401972616530
- Keerthi Tamragouri, M.D.Bolingbrook, IL 604401477971216
- Riaz Elahi, MDOak Lawn, IL 604531356421325
- Rami Haddad, MDOak Lawn, IL 604531710072624
- Amar Hamad, MDOak Lawn, IL 604531598765166
Common questions
What is Usman Zaheer, DO's NPI number?
Usman Zaheer, DO's National Provider Identifier (NPI) is 1104319383, issued on Jun 12, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Usman Zaheer, DO located?
The NPPES record lists a practice address at 500 S Weber RD, Romeoville, IL, 60446. Phone: (815) 773-7732. Providers update this record themselves, so call before visiting.
How can I verify Usman Zaheer, DO's license?
NPPES lists Illinois license number 036170030, 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 Usman Zaheer, DO prescribe under Medicare Part D?
In 2024, Usman Zaheer, DO had 422 Medicare Part D claims for 124 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.