Make an appointment today at our Riverhead, Long Island, Suffolk County New York location today. Located just minutes from the Riverhead MTA LIRR station and the Long Island Expressway (495). Conveniently located near the Long Island towns of Flanders, Riverside, Calverton, Manorville, Jamesport, Northampton, Baiting Hollow, Southhampton, Shelter Island, East Hampton, Sag Harbor, Amagansett, and Montauk. Thrivewell Infusion is New York’s leading infusion care company, offering IV infusion and infusion therapy. Relax in our luxurious private suites with comfortable recliners, TV, WiFi access, iPads, food, and beverages.