Just to the east of Nassau University Medical Center, NY 24 enters an intersection with NY 106 (North Newbridge Road), and four blocks later, exit W3 of the Wantagh State Parkway. Continuing east through the town of Hempstead, NY 24 remains a six-lane divided boulevard, crossing north of the Levittown Public Library as the route crosses into Levittown, intersecting with Jerusalem Avenue at the western end of the community. NY 24 continues east along a commercial strip into an intersection with North Wantagh Avenue, bending southeast into an intersection with NY 107 (Hicksville Road). The route then crosses into the town of Oyster Bay. Retaining the Hempstead Turnpike name, NY 24 enters the Plainedge neighborhood of Oyster Bay.