Dr. Mark William Koser MD is a male Ophthalmologist, has 25 years of experience and practices in Ophthalmology.
Dr. Mark Koser has 3 office locations.
Retina & Diabetes Eye Care Associates
3611 Richmond Ave
Staten Island, NY 10312

Phone Number
Locations and availability (3)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

  • Currently 4 of 4 stars
Patient comments (0)

The overall average patient rating of Dr. Mark Koser is Excellent. Dr. Koser has been reviewed by 2 patients who have provided 0 comments. The rating is 4 out of 4 stars.

Specialties & Research

Dr. Mark Koser, MD is board certified in Ophthalmology.

Education & Awards

Dr. Koser graduated from State University of New York Downstate, Brooklyn.


Dr. Koser has 16 hospital affiliations:

  • Staten Island University Hospital North 
  • University Hospital of Brooklyn at Long Island Hospital 

Accepted Insurance Plans

Dr. Koser accepts these health insurances in at least one office:

  • MVP Health Care Preferred Care - 12 plans
  • United Healthcare - 11 plans
  • HIP Health Plan of New York - 36 plans
  • Empire Blue Cross Blue Shield - 15 plans
  • Unicare - 11 plans
  • Univera Healthcare - 1 plan
  • Neighborhood Health Plan (NHP) - 1 plan
  • Evercare - 1 plan
  • Oxford Health Plans - 3 plans
  • Humana - 2 plans
  • Capital District Physicians Health Plan - 7 plans
  • Cigna - 3 plans
  • Healthfirst - 2 plans
  • The Empire Plan (UHC) - 1 plan
  • USA H & W Network - 1 plan
  • AMERIGROUP - 3 plans


  • Italian
  • Spanish

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Additional Information
Where does Dr. Mark W. Koser practice?
Dr. Mark Koser practices Ophthalmology near Staten Island, NY.
Additional practice locations include: Brooklyn, NY.
See Staten Island Ophthalmologists.