NPPES file of Aug 9, 2026

Barbara Marie O'Brien, MD

Maternal & Fetal Medicine Physician · Weymouth, MA

Barbara Marie O'Brien, MD is a maternal & fetal medicine physician with a practice address in Weymouth, Massachusetts, and NPI 1609915081, issued on Feb 5, 2007. Check the license (Massachusetts 221972, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609915081
Name
Barbara Marie O'Brien
Credential
MD
Primary taxonomy
Maternal & Fetal Medicine Physician 207VM0101X
License number
221972 MA
Self-reported in NPPES; status is on the state search
Practice location
55 Fogg RD, Weymouth, MA 02190
Phone
(781) 624-8000
Enumerated
Feb 5, 2007
Record last updated
Jan 4, 2024
Medicare enrollment
Enrolled (PECOS I20051006000332); accepts Medicare assignment
Medical or professional school
New York Medical College, 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest maternal & fetal medicine physician records → All 92 in Massachusetts → Look up another NPI →

Also registered at 55 Fogg RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Michael Abreu, CRNACertified Registered Nurse Anesthetist1407330848
  2. Kathleen Abruzese, R.N.Clinical Nurse Specialist1487773180
  3. Mohammad AfrasiabiSurgery Physician1063893139
  4. Hana Altwal, MDInternal Medicine Physician1386075091
  5. Samuel BabchuckRegistered Nurse1700559515
  6. Shannon Badgett, LCSWClinical Social Worker1972142834

Verify Barbara Marie O'Brien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 221972    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. South Shore Medical Center, Inc.Weymouth, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Barbara Marie O'Brien among 92 maternal & fetal medicine physician records in Massachusetts

Barbara Marie O'Brien, MD is one of 92 maternal & fetal medicine physician records with a practice address in Massachusetts. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.

  • NPI issued2007 · 46% of these records are older, 49% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 82% of these records are
  • Graduated1998 · median 2005 among the 75 with a school on file
  • Record last updated2024 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Maternal & Fetal Medicine Physician providers in Massachusetts

There are 92 maternal & fetal medicine physician records in Massachusetts.

All 92 in Massachusetts → Every provider in Weymouth → Maternal & Fetal Medicine Physician nationwide →

The 8 maternal & fetal medicine physician records with the nearest ZIP codes

  1. George Graham, MDWeymouth, MA 021901710961859
  2. Karen O'Brien, M.D.South Weymouth, MA 021901780623215
  3. Achilles Athanassiou, M.D.Boston, MA 022151730159419
  4. Millie Ferres, M.D.Boston, MA 022151568789337
  5. Kee-Hak Lim, M.D.Boston, MA 022151215919428
  6. Sarah Little, MDBoston, MA 022151396936415
  7. Kolawole Oyelese, M.D.Boston, MA 022151568407955
  8. Deborah Platek, MDBoston, MA 022151760581334

Common questions

What is Barbara Marie O'Brien, MD's NPI number?

Barbara Marie O'Brien, MD's National Provider Identifier (NPI) is 1609915081, issued on Feb 5, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Barbara Marie O'Brien, MD located?

The NPPES record lists a practice address at 55 Fogg RD, Weymouth, MA, 02190. Phone: (781) 624-8000. Providers update this record themselves, so call before visiting.

How can I verify Barbara Marie O'Brien, MD's license?

NPPES lists Massachusetts license number 221972, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.