Doctor profile · Federal record

Dr. James O'Neill, D.O.

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Student in an Organized Health Care Education/Training Program · Brockton, MA

  • NPI 1871029645
  • Accepts Medicare
  • 9 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
680 Centre St
Brockton, MA 023023308
(508) 941-7400
Additional location
455 Toll Gate RD
Warwick, RI 028862759
(401) 737-7010
fax (401) 736-1975
Mailing address
85 Rochambeau Ave, Apt #3
Providence, RI 029061909

Credentials & registration

NPPES · NUCC
NPI registered
May 2017 — 9 yrs on file
Profile last updated
June 25, 2024
Year of graduation
2017 — 9 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (2)
Massachusetts #1017205 · Rhode Island #DO01089

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1871029645. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
229
Distinct HCPCS
5
Medicare allowed
$30,433
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 77 73 $177
99284 Emergency department visit with moderate level of medical decision making 75 69 $122
99291 Critical care, first 30-74 minutes 27 26 $209
99283 Emergency department visit with low level of medical decision making 26 25 $72
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 24 23 $8

In context: peer comparison

Among 24 peers in this city , average services per provider: 44. This provider delivers 5.2× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
157
Patients
155
Total drug cost
$1,006
Drug Type Claims Patients Total cost
Ibuprofen Generic 32 31 $150
Prednisone Generic 30 29 $115
Azithromycin Generic 28 28 $172
Cyclobenzaprine Hcl Generic 28 28 $128
Ondansetron Odt (Ondansetron) Brand 26 26 $311
Dicyclomine Hcl Generic 13 13 $129

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. James O'Neill's medical specialty?
Dr. James O'Neill practices Emergency Medicine Physician in Brockton, MA.
Where does Dr. James O'Neill practice?
Dr. James O'Neill practices at 680 Centre St, Brockton, MA 023023308. Office phone: 5089417400.
What is Dr. James O'Neill's NPI?
Dr. James O'Neill's National Provider Identifier (NPI) is 1871029645, issued by NPPES.
Does Dr. James O'Neill accept Medicare assignment?
Yes. Dr. James O'Neill accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. James O'Neill commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.