Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Leonard Giannone, MD

Individual provider Hematology & Oncology Physician · NPI 1245297571

Leonard Giannone, MD is a Hematology/Oncology in Springfield, Illinois. Graduated from University of Chicago, Pritzker School of Medicine in 1979, 47 years ago. Practices with Springfield Clinic, LLP, a 679-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
47
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

900 N 1st St
Springfield, IL 62702-3749
Phone: (217) 528-7541
Fax: (217) 527-2830
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 036061203 (IL)

Record details

NPI number1245297571
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 28, 2006
Last updated in NPPESMay 22, 2020
Certification dateMay 22, 2020
Mailing address1025 S 6th St, Springfield, IL 62703-2403

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Springfield Clinic, Llp — 679 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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