Patient Reviews

Reviews reflect patients' level of satisfaction with the care they received from this provider. Dr. Mark Koser xhas an overall rating of 4.7.


Dr. Mark Koser, MD is a Doctor primarily located in Staten Island, NY, with other offices in Staten Island, NY and Brooklyn, NY (and 1 other location). He has 32 years of experience. His specialties include Ophthalmology. Dr. Koser is affiliated with Staten Island University Hospital - North, Brooklyn Hospital Center and New York Eye & Ear Infirmary. He speaks English.


Patients rate and review their physicians based on criteria of care including bedside manner, doctor-patient face time, and degree of follow-up. Patients also provide their doctor with an overall ratings. Vitals analyzes these ratings annually, along with other quality measures, to identify and award the top physicians.


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Specialties & Expertise

Dr. Mark Koser has the following 9 areas of expertise, 1 specialty and 1 board certification.


An ophthalmologist has the training to do much more than just prescribe glasses. They are physicians specially trained to diagnose and treat disorders of the eyes and vision. These doctors are experts on the complicated anatomy of the eye and are trained to treat eye diseases through both medical and surgical methods.
Some common conditions that ophthalmologists treat are cataracts, glaucoma, strabismus, diabetic retinopathy, macular degeneration and amblyopia. In addition, ophthalmologists can provide prescriptions for eye glasses and contact lenses and perform LASIK surgery and other corrective surgeries for refractive errors like myopia (near-sightedness), hyperopia (far-sightedness), astigmatism and presbyopia.


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Board Certification

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.

Locations & Directions

Drs Alterman & Gerstman PLLC

3611 Richmond Ave
Staten Island, NY 10312

Richmond University Medical Center

800 Castleton Ave
Staten Island, NY 10310

349 Henry St
Brooklyn, NY 11201

600 Mount Pleasant Ave
Dover, NJ 07801

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Dr. Mark Koser, MD is similar to these 3 Doctors near Staten Island, NY.