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

John Joseph O'Connell, MD

Individual provider Radiation Oncology Physician · NPI 1952455768

John Joseph O'Connell, MD practises Radiation Oncology in Greenville, South Carolina. Graduated from Georgetown University School of Medicine in 1993, 33 years ago. Practices with Prisma Health University Medical Group, a 2,446-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in North Carolina and South Carolina.

Years since qualifying
33
Trained at
Georgetown University School of Medicine
Licensed in
NC, SC
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.

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Practice location Address checks out

900 W Faris Rd
Greenville, SC 29605-4255
Phone: (864) 455-7070
Fax: (864) 454-4669
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 131 Lila Doyle Dr, Seneca, SC 29672-9495 — (864) 888-3717

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 37316 (SC)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 9501034 (NC)

Record details

NPI number1952455768
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 22, 2007
Last updated in NPPESJune 14, 2021
Certification dateJune 14, 2021

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Prisma Health University Medical Group — 2446 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations11 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 patients240
Services billed 1,918 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Colleagues at Prisma Health University Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2446 clinicians in the practice; 12 are shown here.

Other providers in Greenville