Dr Patricia O'sullivan, MD - Medicare Obstetrics/gynecology in Oakdale, NY

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Dr Patricia O'sullivan, MD is a medicare enrolled "Obstetrics & Gynecology - Obstetrics" physician in Oakdale, New York. She went to State University Of New York At Stony Brook, School Of Medicine and graduated in 1994 and has 31 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice North Shore-lij Medical Pc and her current practice location is 971 Montauk Hwy, Oakdale, New York. You can reach out to her office (for appointments etc.) via phone at (631) 589-4344.

Dr Patricia O'sullivan is licensed to practice in New York (license number 208280) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1891718508.

Contact Information

Dr Patricia O'sullivan, MD
971 Montauk Hwy,
Oakdale, NY 11769-1434
(631) 589-4344
(631) 563-4155

Map and Direction




Physician's Profile

Full NameDr Patricia O'sullivan
GenderFemale
SpecialityObstetrics/gynecology
Experience31 Years
Location971 Montauk Hwy, Oakdale, New York
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Patricia O'sullivan attended and graduated from State University Of New York At Stony Brook, School Of Medicine in 1994
  NPI Data:
  • NPI Number: 1891718508
  • Provider Enumeration Date: 07/25/2006
  • Last Update Date: 09/11/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 1153234877
  • Enrollment ID: I20031110000248

Medical Identifiers

Medical identifiers for Dr Patricia O'sullivan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891718508NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 208280 (New York)Secondary
207VG0400XObstetrics & Gynecology - Gynecology 208280 (New York)Secondary
207VX0000XObstetrics & Gynecology - Obstetrics 208280 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
North Shore University HospitalManhasset, NYHospital
Good Samaritan Hospital Medical CenterWest islip, NYHospital
Ns/lij Hs Southside HospitalBay shore, NYHospital
Long Island Community HospitalPatchogue, NYHospital
Suny/stony Brook University HospitalStony brook, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North Shore-lij Medical Pc33757015685625

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Patricia O'sullivan allows following entities to bill medicare on her behalf.
Entity NameNorth Shore-lij Medical Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053688572
PECOS PAC ID: 3375701568
Enrollment ID: O20120220000262

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Patricia O'sullivan is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Patricia O'sullivan, MD
971 Montauk Hwy,
Oakdale, NY 11769-1434

Ph: (631) 589-4344		Dr Patricia O'sullivan, MD
971 Montauk Hwy,
Oakdale, NY 11769-1434

Ph: (631) 589-4344

Reviews and Comments


Obstetrics & Gynecology Doctors in Oakdale, NY

Dr. Salil Bakshi, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 971 Montauk Hwy, Oakdale, NY 11769
Phone: 631-589-4344    
Dr. John J Lopes, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 971 Montauk Hwy, Oakdale, NY 11769
Phone: 631-589-4344    Fax: 631-563-4155
Dr. Rebecca Zucconi, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 971 Montauk Hwy, Oakdale, NY 11769
Phone: 631-589-1555    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.