Riverhead Riverhead Dental Associates, P.C. 960 Roanoke Avenue Riverhead, NY 11901 Phone 631-740-9050 Fax 631-740-9053 Google Maps Mon: 8 a.m. – 1 p.m. Tue: 9 a.m.-5 p.m. Thu: 9 a.m.-1 p.m. Fri: 8 a.m.- 2 p.m.