Shortly after the National Socialist takeover, the Association of Statutory Health Insurance Physicians  Kassenärztliche Vereinigung and the medical association began compiling lists of those physicians considered “Jewish” or “non-Aryan.” These lists were not public, but were shared with welfare offices, hospitals, and other health care institutions. This undated list was probably printed in 1935 by the Hamburg Association of Statutory Health Insurance Physicians Kassenärztliche Vereinigung. It lists 150 physicians in Hamburg, Wandsbek, and Altona who were considered “Jewish” according to National Socialist terminology. The medical practices listed are located all over Hamburg, with a concentration in the Jewish quarters Grindel and Harvestehude and also in some streets where medical practices were clustered. For example, a particularly large number of practices was located in the Colonnaden in the city center. These lists represent valuable sources as they not only document the significant share of Jewish physicians in Hamburg’s public health system, but also the medical profession’s unhesitant and early collaboration in their exclusion.