Mary A. Vadnais, M.D.
Maternal & Fetal Medicine Physician · Boston, MA
Mary A. Vadnais, M.D. is a maternal & fetal medicine physician with a practice address in Boston, Massachusetts, and NPI 1265605174, issued on Apr 11, 2008. Check the license (Massachusetts 234873, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary A. Vadnais
- Credential
- M.D.
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- 234873 MA
Self-reported in NPPES; status is on the state search - Practice location
- 133 Brookline Ave, Boston, MA 02215
- Phone
- (617) 421-1191
- Enumerated
- Apr 11, 2008
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (617) 421-5828
- Medicare enrollment
- Enrolled (PECOS I20080729000562); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest maternal & fetal medicine physician records → All 92 in Massachusetts → Look up another NPI →
Also registered at 133 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shari Abramowitz, M.D.Pediatrics Physician1558346593
- Maansi AgheraAudiologist1225887292
- Nathalie Alexis, PSY.D.Clinical Psychologist1245886993
- Marina Alfisher, MDDiagnostic Radiology Physician1417925207
- Andrew Allmendinger, DODiagnostic Radiology Physician1972820942
- Dana An, LCSWClinical Social Worker1215108238
Verify Mary A. Vadnais in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 234873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Atrius Health IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary A. Vadnais among 92 maternal & fetal medicine physician records in Massachusetts
Mary A. Vadnais, M.D. 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 2008, is newer than 51% of them.
- NPI issued2008 · 51% of these records are older, 42% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2004 · median 2005 among the 75 with a school on file
- Record last updated2021 · 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 Boston → Maternal & Fetal Medicine Physician nationwide →
The 8 maternal & fetal medicine physician records with the nearest ZIP codes
- Achilles Athanassiou, M.D.Boston, MA 022151730159419
- Ai-Ris Collier, M.D.Boston, MA 022151750675351
- Cassandra Duffy, M.D. M.P.H.Boston, MA 022151770840274
- Millie Ferres, M.D.Boston, MA 022151568789337
- Kee-Hak Lim, M.D.Boston, MA 022151215919428
- Sarah Little, MDBoston, MA 022151396936415
- Kolawole Oyelese, M.D.Boston, MA 022151568407955
- Deborah Platek, MDBoston, MA 022151760581334
Common questions
What is Mary A. Vadnais, M.D.'s NPI number?
Mary A. Vadnais, M.D.'s National Provider Identifier (NPI) is 1265605174, issued on Apr 11, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Vadnais, M.D. located?
The NPPES record lists a practice address at 133 Brookline Ave, Boston, MA, 02215. Phone: (617) 421-1191. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Vadnais, M.D.'s license?
NPPES lists Massachusetts license number 234873, 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.
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.