1928 on science mission in Japan and the Philippines to study means of combating leprosy. 1948 organized All-Union Leprosy Research Institute in Astrakhan. Member, Editor Board, journal “Vestnik dermatologii i venerologii” (Bulletin of Dermatology and Venerology).
Directed expeditions to study leprosy in Far East, Yakut Soviet Socialist Republic, Kara-Kalpak Autonomous Soviet Socialist Republic, Kaz Soviet Socialist Republic and Pamir. Works deal mainly with leprology. 1922-1925 intern at Dermato-Vcnerological Clinic, Moscow University.
1925-1928 Director, Far Eastern Leprosarium. 1929-1939 senior associate, Anti-Leprosy Section, Moscow Tropical Institute. 1939-1948 lecturer, 1st Moscow Medicine Institute.
1948-1950 Director, All-Union LeprosyResearch Institute, Astrakhan.