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.

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.


See areas of expertise for treating specific conditions, procedures and surgeries for this doctor.

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

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