NPIMap

Organization Active NPI

Advanced Obstetric & GYN LLC

  • Obstetrics & Gynecology Physician
  • Flemington, NJ
National Provider Identifier
1205882602
Registry record updated Jun 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
Legal business name
ADVANCED OBSTETRIC & GYN LLC
Practice address
4 Walter E Foran Blvd
Suite 302
Flemington, NJ 08822-4664
Phone
(908) 806-0080
Fax
(908) 806-8570
NPI assigned
May 26, 2006
Last updated
Jun 11, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Deirdre C Masterton, MDNPI 1235314394
Title
Physician Owner
Phone
(908) 806-0080

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Specialist 174400000X NJ
Obstetrics & Gynecology Physician 207V00000X Primary

Addresses

Primary practice location

4 Walter E Foran Blvd
Suite 302
Flemington, NJ 08822-4664

Mailing address

4 Walter E Foran Blvd Ste 302
Flemington, NJ 08822-4668
Phone (631) 897-6837

Other practice location 1

1390 Route 22 West
Suite 104
Lebanon, NJ 08833-2217
Phone (908) 806-0080

Other practice location 2

3322 US Highway 22 W Ste 204
Branchburg, NJ 08876-3392
Phone (908) 806-0080

Other practice location 3

1100 Wescott Dr Ste 203
Flemington, NJ 08822-4600
Phone (908) 284-5293

Other identifiers 3

IdentifierTypeStateIssuer
8597707MedicaidNJ
002785927001MedicaidNJ
2A6047OtherPTAN

Other names 1

  • Advanced Obstetrics & Gynecology, LLC Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NJ

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040308000196 NJ Part B Supplier - Clinic/Group Practice 7315835824 Receives reassigned benefits from 12 practitioners
Practice locations: Branchburg, NJ; Flemington, NJ; Lebanon, NJ

National Provider Directory

National Provider Directory

Locations

3222 US Hwy 22 Ste 802
Branchburg, NJ 08876

3322 US Highway 22 W
Ste 204
Branchburg, NJ 08876
Phone (908) 722-4022

3322 US Highway 22 W
Ste 802
Branchburg, NJ 08876
Phone (908) 947-2090

1100 Wescott Dr
Ste 203
Flemington, NJ 08822
Phone (908) 737-1234

4 Walter E Foran Blvd
Ste 203
Flemington, NJ 08822
Phone (732) 340-1012

4 Walter E Foran Blvd
Ste 302
Flemington, NJ 08822
Phone (908) 284-5295

1390 US Highway 22
Lebanon, NJ 08833

1390 US Highway 22
Ste 104
Lebanon, NJ 08833

Practitioners & affiliated clinicians

Practitioners 16

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 16

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1148601600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1781136000000",
    "number": "1205882602",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4 WALTER E FORAN BLVD STE 302",
            "city": "FLEMINGTON",
            "state": "NJ",
            "postal_code": "088224668",
            "telephone_number": "631-897-6837",
            "fax_number": "908-824-2125"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4 WALTER E FORAN BLVD",
            "address_2": "SUITE 302",
            "city": "FLEMINGTON",
            "state": "NJ",
            "postal_code": "088224664",
            "telephone_number": "908-806-0080",
            "fax_number": "908-806-8570"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1390 Route 22 West",
            "address_2": "Suite 104",
            "address_purpose": "LOCATION",
            "city": "Lebanon",
            "state": "NJ",
            "postal_code": "088332217",
            "country_code": "US",
            "telephone_number": "908-806-0080",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3322 US Highway 22 W Ste 204",
            "address_purpose": "LOCATION",
            "city": "Branchburg",
            "state": "NJ",
            "postal_code": "088763392",
            "country_code": "US",
            "telephone_number": "908-806-0080",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1100 Wescott Dr Ste 203",
            "address_purpose": "LOCATION",
            "city": "Flemington",
            "state": "NJ",
            "postal_code": "088224600",
            "country_code": "US",
            "telephone_number": "908-284-5293",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "ADVANCED OBSTETRIC & GYN LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-05-26",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A",
        "authorized_official_last_name": "MASTERTON",
        "authorized_official_first_name": "DEIRDRE",
        "authorized_official_middle_name": "C",
        "authorized_official_title_or_position": "PHYSICIAN OWNER",
        "authorized_official_telephone_number": "908-806-0080",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "NJ",
            "license": null,
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8597707",
            "state": "NJ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "002785927001",
            "state": "NJ"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PTAN",
            "identifier": "2A6047",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Advanced Obstetrics & Gynecology, LLC",
            "code": "5",
            "type": "Other Name"
        },
        {
            "organization_name": "Advanced Obstetrics & Gynecology, LLC",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Flemington, NJ

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.