In addition to legally required memberships of the

• Berlin Chamber of Physicians
  
  and the
  
  
• Union of Physicians in the National Health Service, Berlin chapter

I also am a member of the:

• Professional Association of German Surgeons
  
  
• Working Group of Surgeons in Private Practice
  
  
• German Society for Tropical Surgery
  
  
• German Federal Association for Out-patient Surgery