Optimum Riverhead254 Old Country Road Riverhead, NY 11901 USMain Number(888) 467-8468(888) 467-8468 9:00 AM - 6:00 PM 9:00 AM - 6:00 PM 9:00 AM - 6:00 PM 9:00 AM - 6:00 PM 9:00 AM - 6:00 PM 9:00 AM - 5:00 PMClosed Today Visit SiteDirections