medical director of the Jewish hospital of Harbin chairman of the Harbin's Jewish community chairman of the Jewish National Fund and Keren Hayesod Zionist fundraising organizations board member of the World Zionist Organization and the Jewish Agency chairman of the Jewish Zionist organization of China president of the Hebrew Association of Harbin chief editor of the Evreiskaya Zhizn ("Jewish Life" – Еврейская жизнь) weekly Jewish magazine in Russian (1921–1943) chairman of the National Council of the Jews of Eastern Asia (Far East) in 1937