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

Dr. Gregory James Gerstner, MD

Individual provider Hematology & Oncology Physician · NPI 1629288659

Dr. Gregory James Gerstner, MD is a Hematology/Oncology in Peoria, Illinois. Graduated from Southern Illinois University School of Medicine in 2002, 24 years ago. Practices with Oncology-Hematology Associates of Central Illinois P C, a 64-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Arizona and Illinois.

Years since qualifying
24
Trained at
Southern Illinois University School of Medicine
Licensed in
AZ, IL
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

8940 N Wood Sage Rd
Peoria, IL 61615-7822
Phone: (309) 243-3000
Fax: (309) 243-3069
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 036.120707 (IL)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence PG PERMIT# 80968 (AZ)

Record details

NPI number1629288659
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 22, 2007
Last updated in NPPESMarch 2, 2026
Certification dateMarch 2, 2026
Mailing address8940 N Wood Sage Rd, Peoria, IL 61615-7822

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Oncology-Hematology Associates Of Central Illinois P C — 64 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations8 on file with Medicare

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