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

Dr. Deirdre C Masterton, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1235314394

Dr. Deirdre C Masterton, MD is an Obstetrics/Gynecology in Flemington, New Jersey. Graduated from New York University School of Medicine in 2004, 22 years ago. Practices with Advanced Obstetric and GYN LLC, a 12-clinician group and accepts Medicare assignment. Licensed in Montana, New Jersey and Rhode Island.

Years since qualifying
22
Trained at
New York University School of Medicine
Licensed in
MT, NJ, RI
In the registry since
2008
Specialties on file
4
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

4 Walter E Foran Blvd Ste 302
Flemington, NJ 08822-4664
Phone: (908) 284-5295
Fax: (908) 806-8570
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 25MA08984000 (NJ)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence 11711 (MT)
Obstetrics & Gynecology Physician Taxonomy 207V00000X · Licence LP00728 (RI)
Obstetrics Physician Taxonomy 207VX0000X · Licence 25MA08984000 (NJ)

Record details

NPI number1235314394
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2008
Last updated in NPPESMarch 4, 2022
Certification dateMarch 4, 2022
Mailing address4 Walter E Foran Blvd Ste 302, Flemington, NJ 08822-4668

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Advanced Obstetric And Gyn Llc — 12 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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