Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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John C Grecula, MD

Individual provider Radiation Oncology Physician · NPI 1871691592

John C Grecula, MD practises Radiation Oncology in Columbus, Ohio. Graduated from Northeastern Ohio University College of Medicine in 1987, 39 years ago. Practices with Osu Radiation Oncology LLC, a 48-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
39
Trained at
Northeastern Ohio University College of Medicine
Licensed in
OH
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

460 W 10th Ave Fl 2
Columbus, OH 43210-1240
Phone: (614) 293-8415
Fax: (614) 293-4044
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 35057469 (OH)

Record details

NPI number1871691592
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 20, 2006
Last updated in NPPESOctober 14, 2025
Certification dateOctober 14, 2025

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Osu Radiation Oncology Llc — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients21
Services billed 43 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Osu Radiation Oncology LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 48 clinicians in the practice; 12 are shown here.

Other providers in Columbus