Position at Norwalk Hospital Association Northwell is the largest not-for-profit health system in the Northeast, serving residents of New York and Connecticut with 28 hospitals, more than 1,000 outpatient facilities, 22,000 nurses and over 20,000 physicians. A Registered Nurse collaborates with patients, family/significant others, peers, physicians, and other members of the interdisciplinary healthcare team in the delivery of healthcare services to patients.