GREAT RIVER, N.Y. — Nonprofit healthcare provider Northwell Health has signed a 14,871-square-foot office lease at Sunrise Business Center in the Long Island city of Great River. Northwell Health will move into Building 300 at Sunrise Business Center, one of four buildings in the 389,490-square-foot complex. The campus features a full-service café and a 5,000-square-foot conference facility. Tenants include University Support Services, Vitamin World and St. Joseph’s College. The Feil Organization represented the landlord in the lease negotiations.