Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
MARGARET RYAN O'NEILL, MD
ActiveMARGARET RYAN O'NEILL, MD is a Obstetrics & Gynecology healthcare provider located in GLASTONBURY, Connecticut. NPI 1255918868 is currently active in the NPPES registry. Verify at CMS.
Obstetrics & Gynecology · GLASTONBURY, CT
Registration Details
- NPI Number
- 1255918868
- Provider Type
- Individual
- Gender
- Female
- NPI Issued
- Mar 28, 2021 (5.4121644625297 yrs)
- Last Updated
- Sep 30, 2025
- License
-
083062 (CT)
Practice Information
- Address
-
330 WESTERN BLVD STE 102GLASTONBURY, CT, 060334383Browse CT providers · Browse ZIP 06033
- Phone
- 8605470306
- Primary Specialty
-
Obstetrics & Gynecology
207V00000X
Other Obstetrics & Gynecology Providers in GLASTONBURY, CT
| Name | Credential | NPI |
|---|---|---|
| DR. NATALIE C WEBB | MD | 1396945085 |
| DR. EUGENE ROZENSHTEYN | MD | 1083881544 |
| JAMIE L BENWAY | MD | 1922392109 |
| SHANNON MCKERNAN SUTHERLAND | MD | 1508277575 |
| DR. STEPHANIE CHUNG | M.D. | 1932630449 |
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.