In western countries he is well known because of his visits to Europe and the United States of America where he celebrated public dhikrs (Remembrance of God. In Turkish "zikrullah") with his dervishes. He is also well known in Turkey for his "ilahis," religious Sufi hymns.
Ozak also ran a bookstore in the Sahaflar Çarşısı in Istanbul.
Tosun Bayrak and Fariha Fatima de Menil in North America and Tugrul Inancer in Turkey are among his most prominent disciples and successors. LP Halveti-Jerrahi-Dhikr Journey To The Lord Of Power Civil Defense Chant des Derviches de Turquie Louisiana Cérémonie du Zikr (5 Festival des Arts Traditionnels 1978, Rennes, France) Civil Defense Garden of Paradise Sufi Ceremony of Remembrance (recorded April 5, 1983 in Istanbul, Turkey) Civil Defense Reunion Ceremonial Music of the Sufis (recorded April 16, 1984 in New York City, United States of America).