Dr John J Brennan, MD - Medicare Orthopedic Surgery in East Setauket, NY

Dr John J Brennan, MD is a medicare enrolled "Orthopaedic Surgery" physician in East Setauket, New York. He went to State University Of New York Downstate Medical Center and graduated in 1993 and has 31 years of diverse experience with area of expertise as Orthopedic Surgery. He is a member of the group practice Orthopedic Assoc Of Long Island Physicians And Medical Group Pllc and his current practice location is 6 Technology Dr Ste 100, East Setauket, New York. You can reach out to his office (for appointments etc.) via phone at (631) 689-6698.

Dr John J Brennan is licensed to practice in New York (license number 211330) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1154353977.

Contact Information

Dr John J Brennan, MD
6 Technology Dr Ste 100,
East Setauket, NY 11733-4079
(631) 689-6698
(631) 751-5548

Map and Direction




Physician's Profile

Full NameDr John J Brennan
GenderMale
SpecialityOrthopedic Surgery
Experience31 Years
Location6 Technology Dr Ste 100, East Setauket, New York
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr John J Brennan attended and graduated from State University Of New York Downstate Medical Center in 1993
  NPI Data:
  • NPI Number: 1154353977
  • Provider Enumeration Date: 07/06/2006
  • Last Update Date: 05/24/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 5193820397
  • Enrollment ID: I20070501000443

Medical Identifiers

Medical identifiers for Dr John J Brennan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154353977NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207XX0005XOrthopaedic Surgery - Sports Medicine 211330 (New York)Secondary
207X00000XOrthopaedic Surgery 211330 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Catholic Home CareFarmingdale, NYHome health agency
St Charles HospitalPort jefferson, NYHospital
Suny/stony Brook University HospitalStony brook, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Orthopedic Assoc Of Long Island Physicians And Medical Group Pllc620416914732

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 John J Brennan allows following entities to bill medicare on his behalf.
Entity NameOrthopedic Associates Of Long Island, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194823914
PECOS PAC ID: 4880592419
Enrollment ID: O20031222000067
Entity NameOrthopedic Assoc Of Long Island Physicians & Medical Group Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1225593809
PECOS PAC ID: 6204169147
Enrollment ID: O20190610001136

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 John J Brennan 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 John J Brennan, MD
6 Technology Dr Ste 100,
East Setauket, NY 11733-4079

Ph: (631) 689-6698
Dr John J Brennan, MD
6 Technology Dr Ste 100,
East Setauket, NY 11733-4079

Ph: (631) 689-6698

Reviews and Comments


Orthopaedic Surgery Doctors in East Setauket, NY

Dr. Nicholas Divaris,
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 14 Technology Dr, East Setauket, NY 11733
Phone: 631-444-4233    
Dr. Michael Joseph Sileo, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 6 Technology Dr Ste 100, East Setauket, NY 11733
Phone: 631-689-6698    Fax: 631-751-5548
Dr. Morgan Naichi Chen, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 6 Technology Dr Ste 100, East Setauket, NY 11733
Phone: 631-689-6698    Fax: 631-751-5548
Dr. James Nicholson, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 14 Technology Dr, East Setauket, NY 11733
Phone: 631-444-4233    
Dr. Christopher Mileto, M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 6 Technology Dr Ste 100, East Setauket, NY 11733
Phone: 631-689-6698    Fax: 631-751-5548
Neil J Kurtz, MD
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 6 Technology Dr, Suite 100, East Setauket, NY 11733
Phone: 631-689-6698    Fax: 631-751-5548

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.