Claim: Leonas Koganas was a Lithuanian Jewish physician who served as Minister of Finance and became a member of the Communist Party of the Soviet Union in 1947.
Evidence: After the occupation of Lithuania by the Soviet Union in June 1940, he became Minister of Health in the short-lived People's Government of Lithuania (it was a new ministry; before, there was only the Health Department under the Ministry of Internal Affairs). Moisiejus Leonas Koganas (February 20, 1894, Šiauliai – May 30, 1956, Vilnius) was a Lithuanian Jewish doctor specializing in lung diseases, particularly tuberculosis. Ministry of Finance (Lithuania)