Margaret S. Dufreney, MD

Primary specialty

Obstetrics PhysicianTaxonomy code 207VX0000X

License

25MA10416100 Issued in NJ

Practice address

479 County Road 520 Ste A202
Marlboro, NJ 07746-1087

Phone

(732) 837-1130

NPI assigned

Jul 8, 2010

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in NJ

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Obstetrics/Gynecology

Education

Pennsylvania State University College of Medicine, 2006

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

OB Hospitalist Services New Jersey PAGroup PAC ID 3476859182, 45 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Centrastate Medical Center Hospital, Freehold, NJ, CCN 310111

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• OB Hospitalist Services New Jersey, PA

  • Obstetrics & Gynecology Physician
  • Greenville, SC
  • NPI 1801169966

  NJ

  Medicare reassignment Care Compare group NPD
• Centrastate Specialists, P.C.

  • Nurse Practitioner
  • Freehold, NJ
  • NPI 1700389301
  Medicare reassignment NPD
• Practice Associates Medical Group

  • Internal Medicine Physician
  • Morristown, NJ
  • NPI 1427016385

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Hackensack Meridian Health Medical Group - Specialty Care PC

  • Surgical Critical Care Physician
  • Red Bank, NJ
  • NPI 1215989249
  Medicare reassignment
• Centrastate Medical Center, Inc

  • General Acute Care Hospital
  • Freehold, NJ
  • NPI 1295718450
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Centrastate Medical Center, Inc

  • General Acute Care Hospital
  • Freehold, NJ
  • NPI 1295718450
  Care Compare affiliation

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

{
    "created_epoch": "1278547200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778198400000",
    "number": "1922310705",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "331 NEWMAN SPRINGS RD",
            "address_2": "BLDG 2, STE 220",
            "city": "RED BANK",
            "state": "NJ",
            "postal_code": "077015688"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "479 COUNTY ROAD 520 STE A202",
            "city": "MARLBORO",
            "state": "NJ",
            "postal_code": "077461087",
            "telephone_number": "732-837-1130"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "50 W 77th St",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100245116",
            "country_code": "US",
            "telephone_number": "212-579-6000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1945 Route 33",
            "address_purpose": "LOCATION",
            "city": "Neptune",
            "state": "NJ",
            "postal_code": "077534488",
            "country_code": "US",
            "telephone_number": "732-776-3790",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUFRENEY",
        "first_name": "MARGARET",
        "middle_name": "S.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-07-08",
        "last_updated": "2026-05-08",
        "certification_date": "2026-05-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VX0000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Obstetrics",
            "state": "NJ",
            "license": "25MA10416100",
            "primary": true
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "257582",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NJ",
            "license": "25MA10416100",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amy L Dorfman, LCSW
• Lauren Dorman, R.D.
• Dr Howard Schoenfeld
• Dr. Wayne Graber and Dr. Brian M. Peters, P.a.
• Gregory Dube
• Joanne T Dunnigan, LCSW
• Courtney M Dworkin, MS, CCC-SLP
• Diana Miller Eckhaus, MSW
• Deanna Egenburg, MD
• Martha Jean Eidmann-Hicks, LMFT MDIV

• Obstetrics Physician in Marlboro, NJ
• Providers in Marlboro, NJ by specialty
• Obstetrics Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 8, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.