 NewYork-Presbyterian Hospital, along with Weill Cornell Medicine and Columbia University Vagelos College of Physicians and Surgeons run the system.Each hospital in the system is an affiliate of either of the two medical colleges.To become a part of the system, institutions must meet standards of the organization and to remain in it, "each must continue to pursue a quality agenda, which includes review and evaluation of clinical, operational, and financial data," according to the Web site of the organization.