 In 1815 he was appointed professor of medicine at the University of Berlin and hospital director at the Berlin Charité.In 1789 Berends published "Über den Unterricht junger Ärzte am Krankenbett" (Education of Young Physicians at the Bedside), in which he described his experiences at the Thielschen Krankenhaus in Frankfurt.Shortly after his death in 1826, his one-time student, Karl Sundelin, published Berends' lectures on practical medical science (""Vorlesungen über die praktische Arzneiwissenschaft"").