Eileen Linda Chang, MD - Medicare Ophthalmology in East Setauket, NY

Eileen Linda Chang, MD is a medicare enrolled "Ophthalmology - Glaucoma Specialist" physician in East Setauket, New York. Her current practice location is 33 Research Way, East Setauket, New York. You can reach out to her office (for appointments etc.) via phone at (631) 444-4090.

Eileen Linda Chang is licensed to practice in New York (license number 315803-01) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1831543347.

Contact Information

Eileen Linda Chang, MD
33 Research Way,
East Setauket, NY 11733-3489
(631) 444-4090
Not Available

Map and Direction




Physician's Profile

Full NameEileen Linda Chang
GenderFemale
SpecialityOphthalmology - Glaucoma Specialist
Location33 Research Way, East Setauket, New York
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1831543347
  • Provider Enumeration Date: 04/20/2016
  • Last Update Date: 11/04/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 7517204084
  • Enrollment ID: I20200821000438

Medical Identifiers

Medical identifiers for Eileen Linda Chang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831543347NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207WX0009XOphthalmology - Glaucoma Specialist 315803-01 (New York)Primary
207WX0108XOphthalmology - Uveitis And Ocular Inflammatory Disease 315803-01 (New York)Secondary

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. Eileen Linda Chang allows following entities to bill medicare on her behalf.
Entity NameYale University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205822236
PECOS PAC ID: 9436061736
Enrollment ID: O20031105000015

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. Eileen Linda Chang 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
Eileen Linda Chang, MD
33 Research Way,
East Setauket, NY 11733-3489

Ph: (631) 444-4090
Eileen Linda Chang, MD
33 Research Way,
East Setauket, NY 11733-3489

Ph: (631) 444-4090

Reviews and Comments


Ophthalmology Doctors in East Setauket, NY

Dr. Gideon Schneck, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 33 Research Way, East Setauket, NY 11733
Phone: 631-444-4090    
Dr. Stuart Fourman, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 33 Research Way, East Setauket, NY 11733
Phone: 631-444-4090    
Nariman Boyle, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 33 Research Way, Suite 13, East Setauket, NY 11733
Phone: 631-444-4092    
Dr. Jack Oats, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 4 Technology Dr, Suite 150, East Setauket, NY 11733
Phone: 631-941-1400    Fax: 631-941-1476
Dr. John R Wittpenn, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 4 Technology Dr, Suite 150, East Setauket, NY 11733
Phone: 631-941-1400    Fax: 631-941-1476
Matthew D. Karl, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 33 Research Way Ste 13, East Setauket, NY 11733
Phone: 631-444-0650    Fax: 614-293-4719
Dr. Alexander Llinas, M.D., PH.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 3400 Nesconset Hwy, Suite 107, East Setauket, NY 11733
Phone: 631-751-2020    

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.