Dr. Denis A. Ostrovskiy is a neurologist in Lake Success, New York and is affiliated with multiple hospitals in the area, including Mount Sinai Hospital and St. Francis Hospital & Heart Center. He received his medical degree from St Petersburg Medical State Academy and has been in practice for more than 20 years. Dr. Denis A. Ostrovskiy has expertise in treating Alzheimer's dementia, Parkinson's disease, spinal stenosis and spondylosis, among other conditions - see all areas of expertise. Dr. Denis A. Ostrovskiy accepts Medicare, Aetna, Humana, Cigna, Blue Cross - see other insurance plans accepted.