Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Margaret Ryan O'Neill, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1255918868

Margaret Ryan O'Neill, MD is an Obstetrics/Gynecology in Glastonbury, Connecticut. Graduated from University of Connecticut School of Medicine in 2021, 5 years ago. Practices with Physicians for Women's Health, LLC, a 317-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
5
Trained at
University of Connecticut School of Medicine
Licensed in
CT
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

330 Western Blvd Ste 102
Glastonbury, CT 06033-4383
Phone: (860) 547-0306
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 80 Seymour St, Hartford, CT 06102-8000 — (860) 972-3497

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 083062 (CT)

Record details

NPI number1255918868
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2021
Last updated in NPPESSeptember 30, 2025
Certification dateSeptember 30, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice Physicians For Women'S Health, Llc — 317 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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