The Cardiac Prevention and Rehabilitation Center is located in The Heart Center on the second floor of the Medical Plaza Building at Hackensack University Medical Center. Address: 20 Prospect Avenue, Suite 200 Hackensack, New Jersey 07601 Phone: 201-996-3589 Fax: 201-996-3555 Hours of Operation: Monday / Wednesday / Friday - 6 a.m. to 7 p.m. Tuesday / Thursday - 6 a.m. to 4: 30 p.m.