1. Prof. of internal medicine and nephrology Ain shams University. 2. Head of nephrology department Ain Shams university specialized hospital 3. Hemodialysis Chapter chair of the Egyptian Society of Nephrology and Transplantation , ESNT 4. Vice president of the ESNT 5. Chair of the African committee for COVID-19 Pandemic 6. Chair of Hemodialysis Committee of African Nephrology ( AFRAN ) 7. Editor of the Egyptian Hemodialysis Guidelines . 8. Trainer and Examiner in the Egyptian nephrology Fellowship 9. Chief consultant of the MOH Egyptian Nephrology Committee 10. R&D Director of Hemodialysis membranes and Dialyzers evaluation Allmed UK / Germany.