In 2018, the specialist for internal medicine and cardiology and ACHD certified expert for adults with congenital heart defects was awarded the venia legendi for internal medicine by the medical faculty of the EMU. As senior physician, the trained emergency physician at the University Hospital Münster has been in charge of the outpatient department of the Clinic for Cardiology III: Congenital Heart Defects (ACHD) and Valve Diseases since 2016, and since 2018 also of the echocardiography of the Clinics for Cardiology I-III. Stefan Orwat is a member of the German Society of Cardiology - Heart and Circulation Research (DGK), the European Society of Cardiology (ESC) and here the European Assocation for Cardiovascular Imaging, the ESC Working Group on Grown-Up Congenital Heart Disease and the ESC Working Group on Valvular Heart Disease.