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Sergiu Marcus M.D., Ph.D. – Top Doctor

Great Neck, NY — Sergiu Marcus M.D., Ph.D., is being recognized by Continental Who’s Who as a Top Doctor in the field of Ophthalmology and acknowledgment of his professional excellence as an Ophthalmologist with SightMD.

Sergiu Marcus M.D.

SightMD is home to North Shore Eye Care and Long Island Eye Surgical Care, a vision executed in 2016 by its President Jeffrey Martin, M.D., and Chairman John Passarelli, M.D. Both ophthalmologic practices, individually, were renowned for providing the highest standard of patient care in the region. Today, under the name of SightMD, the highly-trained specialists and staff strive to continue the tradition of exceptional patient care established by North Shore Eye Care and Long Island Eye Surgical Care. SightMD offers world-class comprehensive ophthalmologic treatment and surgery at several locations across Long Island, Westchester, and New York.

Board-certified Ophthalmologist Dr. Marcus has led a remarkable career in his field, having accrued years of professional excellence. Prior to entering his field, he had a strong interest in engineering, particularly electrical engineering. Later on, he realized that practicing ophthalmology, according to him “seemed natural in light of the connection with visual pathways.” In his current capacity at SightMD, he is demonstrating the highest level of professionalism and integrity. He specializes in vitreo-retinal disorders of the eye, which include diabetic retinopathy, macular degeneration, and other diseases of the retina.

Alongside his current appointment, he is an Assistant Clinical Professor in the Department of Ophthalmology at the Mt. Sinai School of Medicine as well as the Mt. Sinai Hospital. He is also an attending in ophthalmology on the staff of Good Samaritan Hospital, W. Islip, Southside Hospital, Bay Shore, and the Long Island Ambulatory Surgery Center.

Dr. Marcus’s acclaimed career began after he completed his medical training at Cornell University Medical College in New York. Soon thereafter, he earned a Ph.D. from the Rockefeller University, Biophysics, and Visual Neurophysiology Laboratory in New York. He also completed a prestigious Retinal Fellowship at The Wilmer Eye Institute at Johns Hopkins Hospital in Baltimore. With a commitment to excellence, Dr. Marcus is board-certified in Ophthalmology.

To stay up-to-date with the latest industry developments, Dr. Marcus maintains active memberships and affiliations with professional organizations including the Association for Research in Vision and Ophthalmology, American Medical Association, New York Ophthalmological Society, Wilmer Residents Association, and the American Academy of Ophthalmology.

Dr. Marcus dedicates this recognition to his wonderful son, Edward Marcus who works with him and is extremely good.

For further information about SightMD, please visit

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