Oberstarzt

Oberstarzt (OTA) is a military rank in German speaking armed forces. It denotes a medical staff officer surgeon or medical staff officer dentist and is comparable to Colonel (de: Oberst) or Captain (naval) (de: Kapitän zur See) NATO-Rangcode OF5 in anglophone armed forces.

Oberstarzt (Joint Medical Service)
Rank insignia German medical service ranks
Introduction
Rank group Commissioned officers
Army / Air Force Oberstarzt (equivalent Oberst)
Navy Flottenarzt (equivalent KzS)
NATO
equivalent
OF-5