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ADVANCED OBSTETRIC & GYN LLC
NPI 1205882602
Obstetrics & Gynecology in Flemington, NJ

Active since May 26, 2006CLIA Certified · 3 labs
4 WALTER E FORAN BLVD, SUITE 302, FLEMINGTON, NJ 08822(908) 806-0080(908) 806-8570 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 20, 2025, Sep 23, 2024, Jul 21, 2022 and 2 more (5 updates tracked since 2022).

About Advanced Obstetric & Gyn Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ADVANCED OBSTETRIC & GYN LLC (NPI 1205882602) is a healthcare organization registered as an obstetrics & gynecology in Flemington, New Jersey and active in the NPI registry since May 2006. The organization holds 3 active CLIA laboratory certificates, maintains 3 additional practice locations, and lists Deirdre C Masterton, Physician Owner, as its authorized official.

NPPES Registry Identity

NPI1205882602
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameADVANCED OBSTETRIC & GYN LLC
Location Address4 WALTER E FORAN BLVD, SUITE 302Flemington, NJ 08822-4664
Mailing Address4 Walter E Foran Blvd Ste 302Flemington, NJ 08822-4668 · (631) 897-6837 · Fax (908) 824-2125
Phone(908) 806-0080
Fax(908) 806-8570
Organization SubpartNo
Authorized OfficialDeirdre C MastertonPhysician Owner · (908) 806-0080
Enumeration DateMay 26, 2006
Last NPPES UpdateJune 11, 20265 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1205882602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedSpecialistTaxonomy 174400000X
4 WALTER E FORAN BLVD, Flemington, NJ 08822
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Other Names 1

Other NameAdvanced Obstetrics & Gynecology, Llc

Secondary Practice Locations 3

Location 11390 Route 22 West, Suite 104Lebanon, NJ 08833-2217 · Phone (908) 806-0080
Location 23322 US Highway 22 W Ste 204Branchburg, NJ 08876-3392 · Phone (908) 806-0080
Location 31100 Wescott Dr Ste 203Flemington, NJ 08822-4600 · Phone (908) 284-5293

Other Identifiers 3

Medicaid8597707NJ
Other2A6047Ptan
Medicaid002785927001NJ

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA 3

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 31D2128273

Advanced Obstetrics & Gynecology, LLC · Branchburg, NJ
Active · expires Mar 27, 2027
CLIA Number31D2128273
Laboratory TypePhysician Office
Certificate Effective DateMarch 28, 2025
Certificate Expiration DateMarch 27, 2027
Laboratory DirectorSeth M. Rubin
Laboratory Phone(908) 284-5283
Laboratory LocationAdvanced Obstetrics & Gynecology, LLC3322 Us Highway 22 West Suite 204, Branchburg, NJ 08876
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 31D0973974

Advanced Obstetrics And Gynecology LLC · Flemington, NJ
Active · expires May 23, 2028
CLIA Number31D0973974
Laboratory TypePhysician Office
Certificate Effective DateMay 24, 2026
Certificate Expiration DateMay 23, 2028
Laboratory DirectorSeth M. Rubin
Laboratory Phone(908) 788-6488
Laboratory LocationAdvanced Obstetrics And Gynecology LLC1100 Wescott Drive Suite 203 Hunterdon Doctors Office Building, Flemington, NJ 08822
CLIA data matches this NPI record on: Address
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 31D1022593

Advanced Obsetrics & Gynecology LLC · Flemington, NJ
Active · expires Feb 19, 2028
CLIA Number31D1022593
Laboratory TypePhysician Office
Certificate Effective DateFebruary 20, 2026
Certificate Expiration DateFebruary 19, 2028
Laboratory DirectorSeth M. Rubin MD
Laboratory Phone(908) 788-6488
Laboratory LocationAdvanced Obsetrics & Gynecology LLC4 Walter E Foran Blvd, Suite 302, Flemington, NJ 08822
CLIA data matches this NPI record on: Address
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

IDAJO M PARENTE PT
Physical Therapist
4 WALTER E FORAN BLVD, SUITE 203
FLEMINGTON, NJ 08822
Hunterdon County (908) 237-0000
DANIEL M PFAU DPT
Physical Therapist
4 WALTER E FORAN BLVD, SUITE 203
FLEMINGTON, NJ 08822
Hunterdon County (908) 237-0000
DR. DARREN EDWARD LOEW D.D.S.
Dentist (Orthodontics and Dentofacial Orthopedics)
4 WALTER E FORAN BLVD, SUITE 205
FLEMINGTON, NJ 08822
Hunterdon County (908) 782-7626
MRS. SUZANNE DAWN PHILLIPS RN, APN, ACNP-BC
Nurse Practitioner
4 WALTER E FORAN BLVD, SUITE 101
FLEMINGTON, NJ 08822
Hunterdon County (908) 782-3204
DR. ROBERT BRUCE BOWDEN DMD
Dentist (General Practice)
4 WALTER E FORAN BLVD, SUITE 305
FLEMINGTON, NJ 08822
Hunterdon County (908) 782-5076
DR. JONATHON SMYTHE BOWDEN D.M.D.
Dentist (General Practice)
4 WALTER E FORAN BLVD, SUITE 305
FLEMINGTON, NJ 08822
Hunterdon County (908) 782-5076
DR. DEIRDRE C MASTERTON MD
Obstetrics & Gynecology
4 WALTER E FORAN BLVD, SUITE 302
FLEMINGTON, NJ 08822
Hunterdon County (908) 284-5295
MRS. KATHRYN J ROWAN RN, APN,C
Nurse Practitioner (Women's Health)
4 WALTER E FORAN BLVD, STE 302
FLEMINGTON, NJ 08822
Hunterdon County (908) 806-0080

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Advanced Obstetric & Gyn LLC's NPI number?

The NPI number for Advanced Obstetric & Gyn LLC is 1205882602. It was assigned to this organization in the NPPES registry on May 26, 2006. The provider is also known as Advanced Obstetrics & Gynecology, LLC.

Where is Advanced Obstetric & Gyn LLC located?

Advanced Obstetric & Gyn LLC is located at 4 Walter E Foran Blvd Suite 302, Flemington, NJ 08822. The listed phone number is (908) 806-0080.

What is Advanced Obstetric & Gyn LLC's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Does Advanced Obstetric & Gyn LLC hold CLIA laboratory certificates?

Yes. 3 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Advanced Obstetric & Gyn LLC was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.