Carl-Heinz Rodenberg, sometimes known as Karl-Heinz Rodenberg (19 November 1904 in Heide – 1995) was a German neurologist and psychiatrist. Rodenberg was proficient in the murder of mental patients by the Nazis, the Action T4 "euthanasia" program, and from 1943 was scientific director of the Reich Central Office for the Combating of Homosexuality and Abortion (Reichszentrale zur Bekämpfung der Homosexualität und der Abtreibung). Life The son of a physician, Rodenberg studied medicine and received his doctorate in 1930 from the University of Marburg with the thesis Über echte Kombinationen epileptischer und schizophrener Symptomkomplexe ("Concerning the real combinations of symptomatic epileptic and schizophrenic complexes"). As a practitioner of medicine, he worked in the university psychiatric clinic, later as a scientific assistant at the Max Planck Institute of Psychiatry in Munich and until 1934 as a doctor in the medical centre of Branitz, near Oppeln, in Upper Silesia. Rodenberg joined the Nazi Party (NSDAP) and the Sturmabteilung (SA) on 20 April 1932. After the Nazi Machtergreifung (seizure of power) in 1933, Rodenberg became an employee of the NSDAP Office of Racial Policy. From 1934 he headed the department of hereditary health for the Oberpräsident of the Provincial Association of Upper Silesia. From 1936 he worked as a medical specialist in psychiatry and neurology, moving to Berlin in 1937. There he led the department for the care of race and heredity in the Reichsausschuß für den Volksgesundheitsdienst (Reich Committee for the Service of Public Health), was director of the Staatsmedizinischen Akademie (State Medical Academy), and also judge of the Hereditary Health Court on matters of compulsory sterilization. Starting on 1 March 1939, Rodenberg worked as a criminal biologist in the department for the care of race and heredity in the Reichsgesundheitsamt (Reich Office for Health). From 28 February 1940 to 14 October 1940, Rodenberg was listed as an expert of the Action T4 euthanasia program. In this capacity he decided on the basis of questionnaires with the data of the sick and disabled who would live and who would die in the Action T4 euthanasia centers. In 1940 Rodenberg tried to join the Schutzstaffel (SS). Being at that time an SA-Sturmbannführer health worker, a report confirmed that Rodenberg had been a long-time informant for the Sicherheitsdienst (SD). The report shows that Rodenberg had "provided the SD with valuable material on many occasions" and "in his work for the SD he has great interest.