Robert David Siegel, MD
Medical Oncology Physician · Alton, IL
Robert David Siegel, MD is a medical oncology physician with a practice address in Alton, Illinois, and NPI 1518901545, issued on Jun 16, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert David Siegel
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 2022039164 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Memorial Dr, Alton, IL 62002
- Phone
- (800) 647-2098
- Enumerated
- Jun 16, 2006
- Record last updated
- Apr 21, 2025
- Fax
- (314) 362-3192
- Medicaid ID
- 200117630 MO
- Medicare enrollment
- Enrolled (PECOS I20240918002211); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1981
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 182 in Illinois → Look up another NPI →
Also registered at 1 Memorial Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sewuese Akuse, MDHospitalist Physician1528702016
- Juletta Avagyan, M.D.Hospitalist Physician1013278944
- Vineela Bandarupalli, MDHospitalist Physician1700174562
- Julie Benhoff, F.N.P.Nurse Practitioner1902130941
- Margaret Brorby, MOT, OTR/LOccupational Therapist1184973687
Verify Robert David Siegel 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
27% fewer Medicare Part D claims than the average medical oncology physician in 2024
514 Medicare Part D claims for 178 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 35 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate36 claims
- Prednisone34 claims
- Ondansetron Hcl30 claims
- Eliquis29 claims
- Anastrozole23 claims
- Potassium Chloride19 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: $121.95
6 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 3,343 providers of this specialty with any payment received $11,773.47 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
- Washington University Physicians IN Illinois IncAlton, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert David Siegel among 182 medical oncology physician records in Illinois
Robert David Siegel, 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 fileYes · 73% of these records are
- Graduated1981 · median 2000 among the 132 with a school on file
- Record last updated2025 · 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 Alton → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Musaberk Goksel, M.D.Mattoon, IL 619381174576490
- Patricia Johnson, MDUrbana, IL 618011467477869
- Ronnie Luyun, MDUrbana, IL 618011346291960
- Kendrith Rowland, MDUrbana, IL 618011407955206
- Tanmay Sahai, M.D.Urbana, IL 618011104265347
- Vamsi Vasireddy, DOUrbana, IL 618011801802996
- Guillermo Rodriguez, MDBelleville, IL 622261861440661
- John Migas, M.D.Normal, IL 617611629076971
Common questions
What is Robert David Siegel, MD's NPI number?
Robert David Siegel, MD's National Provider Identifier (NPI) is 1518901545, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert David Siegel, MD located?
The NPPES record lists a practice address at 1 Memorial Dr, Alton, IL, 62002. Phone: (800) 647-2098. Providers update this record themselves, so call before visiting.
How can I verify Robert David Siegel, 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 Robert David Siegel, MD prescribe under Medicare Part D?
In 2024, Robert David Siegel, MD had 514 Medicare Part D claims for 178 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.