Matthew Bernard Siegel, MD
Hematology & Oncology Physician · Naperville, IL
Matthew Bernard Siegel, MD is a hematology & oncology physician with a practice address in Naperville, Illinois, and NPI 1639333263, issued on Jul 14, 2008. Check the license (Illinois 125054173, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Matthew Bernard Siegel
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 125054173 IL
PG158554 OR
Self-reported in NPPES; status is on the state search - Practice location
- 120 Spalding Dr Ste 111, Naperville, IL 60540
- Phone
- (630) 527-3788
- Enumerated
- Jul 14, 2008
- Record last updated
- Mar 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150820011506); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 120 Spalding Dr Ste 111
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Armstrong, M.S., C.G.C.Genetic Counselor (M.S.)1649656463
- Mohammed Azeem, MD, MPHHematology & Oncology Physician1144583030
- Susan Budds, RN, MSN, APNAdult Health Nurse Practitioner1851426613
- Lindsey Garnett, APRNNurse Practitioner1437634987
- Amanda Hoff, MSGenetic Counselor (M.S.)1578188017
- Rand Naffouje, M.D.Hematology & Oncology Physician1124469267
Verify Matthew Bernard Siegel 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 125054173Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,416 Medicare Part D claims for 174 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Eliquis188 claims
- Prednisone141 claims
- Abiraterone Acetate105 claims
- Acyclovir92 claims
- Prochlorperazine Maleate56 claims
- Xarelto50 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.
The MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $81.97
4 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. 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
- Endeavor Health Medical GroupNaperville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Bernard Siegel among 666 hematology & oncology physician records in Illinois
Matthew Bernard Siegel, MD 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 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 41% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2008 · median 2003 among the 461 with a school on file
- Record last updated2021 · 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 Naperville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Mohammed Azeem, MD, MPHNaperville, IL 605401144583030
- Fariborze Barhamand, MDNaperville, IL 605401093810491
- Mansoina Baweja, MDNaperville, IL 605401629052089
- William Broderick, M.D.Naperville, IL 605401164696464
- Alexander Hantel, MDNaperville, IL 605401083691349
- Joseph Kash, MDNaperville, IL 605401043297971
- Rand Naffouje, M.D.Naperville, IL 605401124469267
- Hassan Pervez, M.D.Naperville, IL 605401144373457
Common questions
What is Matthew Bernard Siegel, MD's NPI number?
Matthew Bernard Siegel, MD's National Provider Identifier (NPI) is 1639333263, issued on Jul 14, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Bernard Siegel, MD located?
The NPPES record lists a practice address at 120 Spalding Dr Ste 111, Naperville, IL, 60540. Phone: (630) 527-3788. Providers update this record themselves, so call before visiting.
How can I verify Matthew Bernard Siegel, MD's license?
NPPES lists Illinois license number 125054173, 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 Matthew Bernard Siegel, MD prescribe under Medicare Part D?
In 2024, Matthew Bernard Siegel, MD had 1,416 Medicare Part D claims for 174 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Matthew Bernard Siegel, MD's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.