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

Barbara Marie O'Brien, MD

Individual provider Clinical Genetics (M.D.) Physician · NPI 1609915081

Barbara Marie O'Brien, MD is an Obstetrics/Gynecology in Weymouth, Massachusetts. Graduated from New York Medical College in 1998, 28 years ago. Practices with South Shore Medical Center, Inc, a 175-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
28
Trained at
New York Medical College
Licensed in
MA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

55 Fogg Rd
Weymouth, MA 02190-2432
Phone: (781) 624-8000
Show map & directions

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

Additional practice locations (2)

  • 300 Longwood Ave, Boston, MA 02115-5724 — (617) 355-6000
  • 330 Brookline Ave, Boston, MA 02215-5400 — (617) 667-4836

Specialties & licences

Maternal & Fetal Medicine Physician (primary) Taxonomy 207VM0101X · Licence 221972 (MA)
Clinical Genetics (M.D.) Physician Taxonomy 207SG0201X · Licence 221972 (MA)

Record details

NPI number1609915081
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 5, 2007
Last updated in NPPESJanuary 4, 2024
Certification dateJanuary 4, 2024

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1998 (28 years in practice)
Group practice South Shore Medical Center, Inc. — 175 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount