Doctor profile · Federal record

Dr. John O'Connell, M.D.

Radiation Oncology Physician (CMS: Radiation Oncology) · Radiation Oncology Physician · Greenville, SC

  • NPI 1952455768
  • Accepts Medicare
  • 33 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
900 W Faris RD
Greenville, SC 296054255
(864) 455-7070
fax (864) 454-4669
Additional location
131 Lila Doyle Dr
Seneca, SC 296729495
(864) 888-3717
fax (864) 888-8486
Mailing address
300 E McBee Ave Fl 4
Greenville, SC 296012842

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
June 14, 2021
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State licenses (2)
South Carolina #37316 · North Carolina #9501034
Medicaid
SC #373161

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1952455768. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,304
Distinct HCPCS
10
Medicare allowed
$191,224
HCPCS Description Services Patients Avg allowed
77014 Ct guidance for insertion of radiation therapy fields 404 26 $43
77014 Ct guidance for insertion of radiation therapy fields 249 25 $43
77300 Calculation of radiation therapy dose 244 58 $31
77334 Design and construction of complex radiation treatment device 175 70 $57
77300 Calculation of radiation therapy dose 151 42 $31
77427 Radiation treatment management, 5 treatment sessions 126 42 $181
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 100 11 $20
77334 Design and construction of complex radiation treatment device 91 35 $58
77427 Radiation treatment management, 5 treatment sessions 87 37 $181
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 80 14 $20

In context: peer comparison

Among 6 peers in this city , average services per provider: 90. This provider delivers 26× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$254
Transactions
11
Manufacturers
9
Payer (manufacturer) Industry Txns Amount
PFIZER INC. 2 $70.81
SERVIER PHARMACEUTICALS LLC 2 $45.22
Daiichi Sankyo Inc. 1 $24.92
Alexion Pharmaceuticals, Inc. 1 $23.08
AstraZeneca Pharmaceuticals LP 1 $18.64
Takeda Pharmaceuticals U.S.A., Inc. 1 $18.34
Bayer Healthcare Pharmaceuticals Inc. 1 $18.23
Incyte Corporation 1 $17.58
Blue Earth Diagnostics Limited 1 $17.15

By nature of payment

Food and Beverage
$254

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
145
Patients
52
Total drug cost
$1,966
Drug Type Claims Patients Total cost
Hydrocortisone Generic 55 40 $430
Levothyroxine Sodium Generic 18 0 $238
Dexamethasone Generic 17 0 $336
Famotidine Generic 16 0 $139
Lidocaine-Prilocaine (Lidocaine/Prilocaine) Brand 15 0 $476
Lorazepam Generic 13 12 $24
Bicalutamide Generic 11 0 $323

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. John O'Connell's medical specialty?
Dr. John O'Connell practices Radiation Oncology Physician in Greenville, SC.
Where does Dr. John O'Connell practice?
Dr. John O'Connell practices at 900 W Faris RD, Greenville, SC 296054255. Office phone: 8644557070.
What is Dr. John O'Connell's NPI?
Dr. John O'Connell's National Provider Identifier (NPI) is 1952455768, issued by NPPES.
Does Dr. John O'Connell accept Medicare assignment?
Yes. Dr. John O'Connell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John O'Connell commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Calculation of radiation therapy dose (HCPCS 77300). Source: CMS Medicare Physician & Other Practitioners file.