 In 1899/90 he served as an inspector of health and quarantine services in Egypt, and after his return to France, was named laboratory chief at the Hôpital Trousseau in Paris.From 1910 to 1937 he was a physician at the Hôpital Laennec, and concurrently served as a physician at the Dispensaire Léon Bourgeois (1912–37).During World War I he was "chef de service" of typhoid and para-typhoid hospitals.