James O'Neill, D.O.
Emergency Medicine Physician · Brockton, MA
James O'Neill, D.O. is an emergency medicine physician with a practice address in Brockton, Massachusetts, and NPI 1871029645, issued on May 11, 2017. Check the license (Massachusetts 1017205, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James O'Neill
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 1017205 MA
DO01089 RI
Self-reported in NPPES; status is on the state search - Practice location
- 680 Centre St, Brockton, MA 02302
- Phone
- (508) 941-7400
- Enumerated
- May 11, 2017
- Record last updated
- Jun 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20210727002094); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 680 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1017205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average emergency medicine physician in 2024
251 Medicare Part D claims for 154 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Prednisone30 claims
- Ondansetron Odt25 claims
- Ibuprofen23 claims
- Cyclobenzaprine Hcl21 claims
- Dicyclomine Hcl19 claims
- Azithromycin15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Brockton Hospital, Inc.Brockton, MA
- Emergency Associates OF Woonsocket LLCWoonsocket, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James O'Neill among 1,829 emergency medicine physician records in Massachusetts
James O'Neill, D.O. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 77% of them.
- NPI issued2017 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2011 among the 1,200 with a school on file
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
74 emergency medicine physician records list a practice address in Brockton
They are 74 of the 4,287 NPPES records with a practice address in Brockton, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Brockton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jose Mario Corona, M.D.Brockton, MA 023021538109061
- Andrew Deane, M.D.Brockton, MA 023021457333080
- Gerald Gorman, M.D.Brockton, MA 023021194756403
- Henry Grazioso, M.D.Brockton, MA 023021154350825
- Laura Griffin, M.D.Brockton, MA 023021104884600
- Ioram Grinblatas, M.D.Brockton, MA 023021699705129
- Rajesh Kapur, M.D.Brockton, MA 023021538191010
- Donald Kornack, M.D.Brockton, MA 023021962427039
Common questions
What is James O'Neill, D.O.'s NPI number?
James O'Neill, D.O.'s National Provider Identifier (NPI) is 1871029645, issued on May 11, 2017. An NPI identifies a provider in billing; it is not a license.
Where is James O'Neill, D.O. located?
The NPPES record lists a practice address at 680 Centre St, Brockton, MA, 02302. Phone: (508) 941-7400. Providers update this record themselves, so call before visiting.
How can I verify James O'Neill, D.O.'s license?
NPPES lists Massachusetts license number 1017205, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James O'Neill, D.O. prescribe under Medicare Part D?
In 2024, James O'Neill, D.O. had 251 Medicare Part D claims for 154 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.