Doctor Profile

Cancer Care · Radiation Oncology

John J. Oconnell

MD · Radiation Oncology · Georgetown University School Of Medicine
210 FREEMAN FARM RD
Duncan, SC 29334
✓ Accepts Medicare 🎓 33+ Years Practicing
895
Medicare Patients / yr
15
Procedures Billed
33
Years Practicing
4
Hospital Affiliations
Data Source: Identity from NPPES (2026). Procedure & patient volume from CMS Medicare Provider Utilization & Payment Data (2023). Hospital affiliations from CMS Physician Compare. We display publicly reported data — no personal information required to view any of it.
Reviewed by: Wes Ward, Founder & Data Lead • View our methodology

Important: We are not affiliated with Medicare, CMS, or John J. Oconnell's practice. This page displays publicly available CMS data to help you research Medicare providers. We do not sell insurance or represent any insurance company. For official enrollment and complete plan information, visit Medicare.gov or call 1-800-MEDICARE.

Medicare Plans That Cover Dr. Oconnell

See which plans Dr. Oconnell accepts

We're pulling plan acceptance data directly from insurance carrier provider directories. Until that feed is live for South Carolina, the fastest way to find a Medicare plan that covers Dr. Oconnell is to compare every Medicare Advantage and Part D plan available near 29334, SC — the Radiation Oncology's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 29334, SC →

Or call the office at (864) 968-5123 to confirm acceptance directly.

What Dr. Oconnell Does

Dr. Oconnell served 895 Medicare patients across 2,304 services in the latest CMS reporting year. That's similar to the average Radiation Oncology in South Carolina (986 patients across 60 doctors).

ProcedureServicesMedicare Patients
Ct guidance for insertion of radiation therapy fields (77014)65351
Calculation of radiation therapy dose (77300)395100
Design and construction of complex radiation treatment device (77334)266105
Radiation treatment management, 5 treatment sessions (77427)21379
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)18025

How to read this: "Services" are the total times Dr. Oconnell billed Medicare for each procedure in the latest reporting year. "Patients" counts unique Medicare beneficiaries. Procedures are shown in plain English; the underlying HCPCS codes are available on request.

Hospital Affiliations

Dr. Oconnell is affiliated with 4 hospitals according to CMS Physician Compare. Below are the 4 hospitals with full quality profiles on our site. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Prisma Health Patewood Hospital

Greenville, SC
★★★★☆ 4/5 CMS Rating

Prisma Health Greenville Memorial Hospital

Greenville, SC
★★★★☆ 4/5 CMS Rating

Prisma Health Hillcrest Hospital

Simpsonville, SC
★★★★☆ 4/5 CMS Rating

Prisma Health Baptist Easley Hospital

Easley, SC
★★☆☆☆ 2/5 CMS Rating

Practice Location & Telehealth Readiness

Dr. Oconnell practices at the address below. If you're evaluating Medicare coverage, location matters for in-network access and — when Dr. Oconnell offers telehealth — broadband availability at your home matters for virtual visits.

Address: 210 FREEMAN FARM RD, Duncan, SC 29334
Phone: (864) 968-5123

Area Safety Grade

D+

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

30 min

Average commute time in this zip · 91% of residents drive to work. Practical context for patients deciding whether to make the trip. See the full neighborhood profile at BestNeighborhood.org.

Telehealth Readiness

69.9279

Households with fiber broadband — important for reliable virtual visits. Check your address at ISPReports.org.

Get directions on Google Maps →

Other Cancer Care Doctors near 29334, SC

If Dr. Oconnell isn't accepting new patients or isn't in your plan's network, these are the closest cancer care doctors near 29334, SC:

DoctorSpecialtyMedicare Patients / yrDistance
Terese L. HowesRadiation Oncology1.3K2.7 mi
William Edenfield, Jr.Hematology/Oncology4272.7 mi
Elizabeth H. CullHematology/Oncology4972.7 mi
Suzanne R. FanningHematology/Oncology6312.7 mi
Britt H. BolemonHematology/Oncology1.1K2.7 mi
Bhumika J. PatelHematology/Oncology2942.7 mi

View all cancer care doctors near 29334, SC →

How to Use This Information

Choosing a Medicare plan that covers Dr. Oconnell takes three steps:

Compare Medicare Plans near 29334, SC → All Doctors near 29334, SC

John J. Oconnell: Common Questions

Does Dr. Oconnell accept Medicare?
Yes. Dr. Oconnell is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Oconnell depends on that plan's provider network. Compare Medicare plans near 29334, SC →
Where is Dr. Oconnell's office?
Dr. Oconnell practices at 210 FREEMAN FARM RD, Duncan, SC 29334. Phone: (864) 968-5123.
What Medicare plans does Dr. Oconnell accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (864) 968-5123 to confirm your specific plan is accepted, or compare all Medicare plans near 29334, SC to see available options.
Does Dr. Oconnell offer telehealth visits?
CMS does not currently list Dr. Oconnell as offering telehealth. Call the office at (864) 968-5123 to confirm whether virtual visits are available.
How experienced is Dr. Oconnell?
Dr. Oconnell graduated in 1993 and has been practicing for approximately 33 years. In the latest CMS reporting year, Dr. Oconnell treated 895 Medicare patients across 15 distinct procedure types.
How do I know if Dr. Oconnell is in-network for my Medicare plan?
Network status varies by plan. The best verification steps: (1) check your plan's provider directory at the carrier's website, (2) call the office at (864) 968-5123 and ask which plans they currently accept, and (3) call the number on the back of your Medicare card. Print our doctor questions checklist →

About the Reviewer

Wes Ward

Wes Ward

Founder & Data Lead

Wes Ward reviews all doctor profiles and methodology for data accuracy. Every Medicare provider page on this site — including the utilization statistics, hospital affiliations, and geocoded practice address — goes through his data-validation pipeline before publication. We display only publicly available CMS data; you never need to enter personal information to see any of it.

With 25+ years in data analytics — including work with highly regulated genomic data at Ancestry.com — Wes brings enterprise-level rigor to healthcare transparency. He is also a co-founder of BestNeighborhood.org (neighborhood data), CrimeGrade.org (block-level safety analytics), and ISPReports.org (broadband availability for telehealth). Those sister sites power the location and telehealth-readiness context on this page.

View full profile → • LinkedIn

Data sources: CMS NPPES (2026), CMS Medicare Provider Utilization & Payment Data (2023), CMS Physician Compare, CrimeGrade.org, BestNeighborhood.org, ISPReports.org. This page is for informational purposes only. Always verify coverage directly with the plan and practice. Read our full methodology → • Privacy policy

Medicare Resources

Choosing the right Medicare plan involves more than just doctor coverage. These guides help you evaluate the full picture:

Medicare Plans for Conditions Treated by Cancer Care Specialists

See which Medicare plans score highest for conditions commonly managed by this specialty in 29334, SC:

Does your Medicare plan cover Dr. Oconnell?

Compare Plans near 29334, SC →