Dr. Mark W. Koser graduated from the SUNY Downstate Medical Center College of Medicine in 1985. He works in Staten Island, NY and 1 other location and specializes in Ophthalmology and Diabetes. Dr. Koser is affiliated with Robert Wood Johnson University Hospital.
Medical School: SUNY Downstate Medical Center College of Medicine; Graduated 1985
*This physician has multiple office locations. See Office Information for details.