Dr. Helen Papaioannou is a pediatrician in New Hyde Park, New York and is affiliated with multiple hospitals in the area, including Cohen Children's Medical Center and Long Island Jewish Medical Center at Northwell Health. She received her medical degree from St. George's University School of Medicine and has been in practice for more than 20 years. Dr. Helen Papaioannou accepts Aetna, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Helen Papaioannou is highly recommended by patients.