Quick answers
- Which hospitals does Deirdre C. Masterton work at?
- Medicare's official clinician data lists Deirdre C. Masterton at 2 hospitals: Hunterdon Medical Center and Robert Wood Johnson University Hospital - Somerset…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Deirdre C. Masterton see patients?
- Medicare's clinician data lists 4 practice locations, including Flemington, NJ, Lebanon, NJ and Branchburg, NJ. Call before your visit to confirm the address.
- What is Deirdre C. Masterton's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Deirdre C. Masterton accept Medicare assignment?
- Yes. Medicare's clinician data says Deirdre C. Masterton accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Deirdre C. Masterton?
- (908) 806-0080, as listed in official Medicare / NPI Registry data.
- What is Deirdre C. Masterton's NPI number?
- 1235314394. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Deirdre C. Masterton works
Medicare's Facility Affiliation Data lists Deirdre C. Masterton at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hunterdon Medical CenterFlemington, NJ · Acute Care Hospital · CCN 310005
- Robert Wood Johnson University Hospital - Somerset…Somerville, NJ · Acute Care Hospital · CCN 310048
Practice locations
Addresses where Deirdre C. Masterton is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 Wescott DrFlemington, NJ 08822 (908) 806‑0080
- 1390 Route 22 W, Suite 104Lebanon, NJ 08833 (908) 806‑0080
- 3322 US Hwy 22 W, Suite 204Branchburg, NJ 08876 (908) 806‑0080
- 4 Walter E Foran Blvd, Suite 302Flemington, NJ 08822 (908) 806‑0080
Group practices
Medicare enrollment lists Deirdre C. Masterton as a member of this group (CMS data updated 2026-10-02).
- Advanced Obstetric and Gyn LLC12 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Flemington
Clinicians with the same Medicare primary specialty in Flemington, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 2004 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235314394 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians