John Michael Oconnell, M.D.
Internal Medicine Physician · Fall River, MA
John Michael Oconnell, M.D. is an internal medicine physician with a practice address in Fall River, Massachusetts, and NPI 1164430633, issued on Aug 3, 2006. Check the license (Massachusetts 261309, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Michael Oconnell
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 261309 MA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Stanley St, Fall River, MA 02720
- Phone
- (508) 675-1054
- Enumerated
- Aug 3, 2006
- Record last updated
- Nov 17, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (508) 324-7777
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 400 Stanley St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rachel Brilhante, RNRegistered Nurse1659179653
- Hannah Campanell, DNP, FNP-BC, MPHFamily Nurse Practitioner1619475019
- Phyllis Cook, NPFamily Nurse Practitioner1992136543
Verify John Michael Oconnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 261309Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
121 Medicare Part D claims for 14 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Furosemide14 claims
- Atorvastatin Calcium11 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.
John Michael Oconnell among 6,825 internal medicine physician records in Massachusetts
John Michael Oconnell, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 internal medicine physician records list a practice address in Fall River
They are 62 of the 3,032 NPPES records with a practice address in Fall River, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Fall River → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Miguel Brillantes, MDFall River, MA 027201609878859
- Mark Hilty, MDFall River, MA 027201609863729
- Ossama Labib, M.D.Fall River, MA 027201225033673
- Nicole McDonald, M.D.Fall River, MA 027201992744080
- Irina Merport, M.D.Fall River, MA 027201992760912
- Harvey Reback, MDFall River, MA 027201285668947
- Ronald Schwartz, M.D.Fall River, MA 027201477519080
- Kenath Shamir, M.D.Fall River, MA 027201811952955
Common questions
What is John Michael Oconnell, M.D.'s NPI number?
John Michael Oconnell, M.D.'s National Provider Identifier (NPI) is 1164430633, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Michael Oconnell, M.D. located?
The NPPES record lists a practice address at 400 Stanley St, Fall River, MA, 02720. Phone: (508) 675-1054. Providers update this record themselves, so call before visiting.
How can I verify John Michael Oconnell, M.D.'s license?
NPPES lists Massachusetts license number 261309, 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 John Michael Oconnell, M.D. prescribe under Medicare Part D?
In 2024, John Michael Oconnell, M.D. had 121 Medicare Part D claims for 14 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.