Oki Clark Ishikawa, MD

At Optum, our sleep medicine specialists seamlessly guide patients from their initial office visit and evaluation through treatment. With an office conveniently located in Ossining, NY, we are dedicated to providing excellent care for all of our patients, both adults and children. Our team specializes in treating snoring, teeth grinding, sleep apnea, narcolepsy and restless leg syndrome. The Optum sleep lab is accredited by the American Academy of Sleep Medicine, and our staff includes board-certified physicians and experienced sleep technologists. Optum accepts most major health plans.