Moisiejus Leonas Koganas (February 20, 1894, Šiauliai – May 30, 1956, Vilnius) was a Lithuanian Jewish medical doctor specializing in lung diseases, particularly tuberculosis.
During World War I, he served as a doctor in the Red Army.
[2] 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).
He spent World War II working at various tuberculosis clinics in the interior of the Soviet Union (Mordovia, Kirghizia, Gorky Oblast, Moscow Oblast).
[2] In the wake of the Doctors' plot, Koganas was arrested in February 1953 and accused of communicating with other arrested doctors, preferring Western treatment methods, and giving poor medical care to various communist workers and activists.