Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
MICHAEL O'NEILL, M.D.
ActiveMICHAEL O'NEILL, M.D. is a Internal Medicine healthcare provider located in FAIRFIELD, Connecticut. NPI 1356873319 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · FAIRFIELD, CT
Registration Details
- NPI Number
- 1356873319
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Mar 29, 2017 (9.3940351930999 yrs)
- Last Updated
- Jun 25, 2025
- Licenses
-
305546 (NY)66914 (CT)66914 (CT)
Practice Information
- Address
-
111 BEACH RDFAIRFIELD, CT, 068246668Browse CT providers · Browse ZIP 06824
- Phone
- 2036963560
- Fax
- 2036963563
- Primary Specialty
-
Internal Medicine
207R00000X
- Additional Specialty
- Hospitalist
- Additional Specialty
- Internal Medicine
Other Internal Medicine Providers in FAIRFIELD, CT
| Name | Credential | NPI |
|---|---|---|
| DR. ALLA CHESKY | MD | 1194707463 |
| NIRMALA LOIS MONTEIRO | MD | 1558346338 |
| ADAM JASON BARD | MD | 1477531218 |
| VALERIE A. I'ANSON | M.D. | 1992779862 |
| PAUL M BELLOFIORE | MD | 1316906456 |
| DR. MONICA M JAIN | MD | 1568423838 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.