Throughout his career, Professor Ghosn has held numerous prestigious positions:
Academic and Hospital Leadership
- - Professor and Chairman of the Department of Hematology Oncology at Hôtel-Dieu de France University Hospital, in Beirut
- - Director of the Post-Graduate Program in Hematology Oncology, Faculty of Medicine, Saint Joseph University of Beirut
- - Chairman of the Hematology Oncology Department, Faculty of Medicine, Saint Joseph University of Beirut
- - Director of the Cancer Center at Clemenceau Medical Center in Beirut - affiliated with Johns Hopkins International
- - Head of Hematology Oncology Division at Clemenceau Medical Center in Beirut - affiliated with Johns Hopkins International
- - Founder of In Good Health (IGH) multidisciplinary clinic in Beirut
Professional Organizations
- - Acting Board Member for many years in the Lebanese Cancer Society (LCS)
- - Co-founder of the Lebanese Cancer Research Group (CRG)
- - Past-President of the Lebanese Society of Medical Oncology (LSMO)
- - Board Member in the Arab Medical Association Against Cancer (AMAAC)
- - Editor-in-Chief of the Pan Arab Journal of Oncology (PAJO) for many years
- - Co-founder and General Secretary of Africa Middle East Cancer Intergroup (AMCI)
- - General Secretary of the Administration Board of the ALUMNI of Institute Gustave Roussy Cancer Center in Villejuif, France