Phelps Hospital, previously known as Phelps Memorial Hospital Center, is a general hospital located in Sleepy Hollow, New York, and a member of the Northwell Health system. As of 2018[update], the hospital comprises 238 beds on its 69-acre (28-hectare) campus. It was founded in 1955 to accommodate the need for a hospital larger than the pre-existing Tarrytown Hospital.