NPIMap

Individual provider Active NPI

Patricia O'Sullivan, M.D.

  • Obstetrics Physician
  • Oakdale, NY
National Provider Identifier
1891718508
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics PhysicianTaxonomy code 207VX0000X
License
208280 Issued in NY
Practice address
971 Montauk Hwy
Oakdale, NY 11769-1434
Phone
(631) 589-4344
Fax
(631) 563-4155
NPI assigned
Jul 25, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 208280 NY
Gynecology Physician 207VG0400X 208280 NY
Obstetrics Physician 207VX0000X 208280 NY Primary

Addresses

Primary practice location

971 Montauk Hwy
Oakdale, NY 11769-1434

Mailing address

971 Montauk Hwy
Oakdale, NY 11769-1434
Phone (631) 589-4344

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20031110000248 NY Practitioner - Obstetrics/Gynecology 1153234877 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
State University of New York at Stony Brook, School of Medicine, 1994
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
North Shore-Lij Medical PCGroup PAC ID 3375701568, 6,374 clinicians

Practice addresses (Care Compare)

300 Community Dr
Manhasset, NY 11030-3816
Phone (516) 562-3058

Hospital & facility affiliations

  • North Shore University Hospital Hospital, Manhasset, NY, CCN 330106
  • Long Island Community Hospital Hospital, Patchogue, NY, CCN 330141
  • Good Samaritan Hospital Medical Center Hospital, West Islip, NY, CCN 330286
  • NS/Lij HS Southside Hospital Hospital, Bay Shore, NY, CCN 330043
  • Suny/Stony Brook University Hospital Hospital, Stony Brook, NY, CCN 330393

Merit-based Incentive Payment System (MIPS)

Final score
93.07 of 100Reported as apm
Quality
79.77
Promoting interoperability
88.77
Improvement activities
40

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of the uterus1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
208280NYMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
North Shore-Lij Medical PC Obstetrics & Gynecology CurrentSince Jul 1, 2012 Accepting new patients
South Shore University Hospital Past Accepting new patients

Locations

301 Montauk Hwy
Bay Shore, NY 11706
Phone (631) 630-3977

1554 Northern Blvd
Manhasset, NY 11030
Phone (516) 390-9242

191 Herricks Rd
New Hyde Park, NY 11040
Phone (516) 248-0144

971 Montauk Hwy
Oakdale, NY 11769
Phone (631) 400-8400

300 Community Dr
Plandome, NY 11030

Networks

  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H1722
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H3359

Interoperability endpoints

  • Direct secure messaging: patriciaosullivan@nslijmedgr.allscriptsdirect.net

Organizations & group practices 2

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.

Hospital & facility affiliations 11

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

NPI Registry JSON

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

{
    "created_epoch": "1153785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1891718508",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "971 MONTAUK HWY",
            "city": "OAKDALE",
            "state": "NY",
            "postal_code": "117691434",
            "telephone_number": "631-589-4344",
            "fax_number": "631-563-4155"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "971 MONTAUK HWY",
            "city": "OAKDALE",
            "state": "NY",
            "postal_code": "117691434",
            "telephone_number": "631-589-4344",
            "fax_number": "631-563-4155"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'SULLIVAN",
        "first_name": "PATRICIA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-25",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "208280",
            "primary": false
        },
        {
            "code": "207VG0400X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": "NY",
            "license": "208280",
            "primary": false
        },
        {
            "code": "207VX0000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Obstetrics",
            "state": "NY",
            "license": "208280",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Oakdale, NY

Sources for this page

Verify at the official NPI Registry.