Leonard Giannone, MD
Hematology & Oncology Physician · Springfield, IL
Leonard Giannone, MD is a hematology & oncology physician with a practice address in Springfield, Illinois, and NPI 1245297571, issued on Apr 28, 2006. Check the license (Illinois 036061203, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Leonard Giannone
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 036061203 IL
Self-reported in NPPES; status is on the state search - Practice location
- 900 N. 1St Street, Springfield, IL 62702
- Phone
- (217) 528-7541
- Enumerated
- Apr 28, 2006
- Record last updated
- May 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (217) 527-2830
- Medicare enrollment
- Enrolled (PECOS I20070703000479); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 900 N. 1St Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tara Bennett, M.D.Obstetrics & Gynecology Physician1194713024
- Ginger Boehler, NPFamily Nurse Practitioner1699049874
- Edward Bradley, M.D.Obstetrics & Gynecology Physician1497744171
- Mary Bretscher, M.D.Hematology & Oncology Physician1073623336
- Cheryl Brown, M.D.Obstetrics & Gynecology Physician1548372097
- Carla Daniels, N.P.Nurse Practitioner1588765820
Verify Leonard Giannone 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 036061203Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
470 Medicare Part D claims for 76 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 43 claims were for opioids.
Most prescribed
- Anastrozole69 claims
- Hydrocodone-Acetaminophen33 claims
- Revlimid27 claims
- Imbruvica25 claims
- Jakafi20 claims
- Prednisone20 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $21.93
1 payment: food and beverage; the largest payer was Gilead Sciences, 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
- Springfield Clinic, LLPCarlinville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard Giannone among 666 hematology & oncology physician records in Illinois
Leonard Giannone, 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 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 57% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1979 · median 2003 among the 461 with a school on file
- Record last updated2020 · 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 Springfield → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Edem Agamah, MDSpringfield, IL 627021932147279
- Mary Bretscher, M.D.Springfield, IL 627021073623336
- Meghna Desai, MDSpringfield, IL 627021609865294
- Praveen Garg, M.D.Springfield, IL 627021760414437
- Timothy Gillison, MDSpringfield, IL 627021710905906
- Aziz Khan, M.D.Springfield, IL 627021699702316
- Victor Lanzotti, MDSpringfield, IL 627021750349270
- Frances Matthews, MDSpringfield, IL 627021366488553
Common questions
What is Leonard Giannone, MD's NPI number?
Leonard Giannone, MD's National Provider Identifier (NPI) is 1245297571, issued on Apr 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Giannone, MD located?
The NPPES record lists a practice address at 900 N. 1St Street, Springfield, IL, 62702. Phone: (217) 528-7541. Providers update this record themselves, so call before visiting.
How can I verify Leonard Giannone, MD's license?
NPPES lists Illinois license number 036061203, 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 Leonard Giannone, MD prescribe under Medicare Part D?
In 2024, Leonard Giannone, MD had 470 Medicare Part D claims for 76 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Leonard Giannone, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.