Prior to joining RedHill, Dr. Kalfus served as VP of Medical Affairs at Lev Pharmaceuticals. He was previously with Aetna/US Healthcare, Hillside Medical Associates (Internist), and Long Island Jewish Medical Center (President of the Staff Society and Chairman of Performance Improvement). Dr. Kalfus completed his residency in Internal Medicine at LIJ and is a graduate of the Albert Einstein College of Medicine (M.D.) and Columbia University (B.A. in Biology).