Koren, a resident of Pardes Hanna-Karkur, started out at Hillel Yaffe Medical Center in 1996 as an economist and then as the Economy Unit Director. Later, he was appointed as Deputy Administrative Director and was in charge of many issues, particularly construction, engineering and information systems. He has also headed complex projects and many committees over the years. In April 2023 he was appointed the Administrative Director of the hospital.
Koren earned his MBA from the University of Haifa's School of Business Administration and his BA in economics and business administration from University of Haifa as well.