- 46th Middle East Medical Assembly, AUBMC, Beirut, Lebanon
- The 43rd Middle East Medical Assembly, AUB, Beirut, Lebanon, 22-25 April 2010.
- The 42nd Middle East Medical Assembly, AUB, Beirut, April 23-26, 2009.
- American College of Surgeons 92nd Annual Clinical Congress Chicago, October 8-12, 2006.
- 10th World Congress of IFSO 2005 Maasricht, The Netherlands (August 31st– September
3rd, 2005).
- 13th International Congress of the EAES “New Trends in General and Oncologic Surgery from Venice” Venice, Italy (June 1-4, 2005).
- Attended The European Endoscopic Surgery Conference, Lisbon-Portugal, June 4, 2002.
- Advanced Course Laparoscopic Aortoiliac Surgery, France (May 10-12,2001)American College of Surgeons, Chicago, October 2000.
- European Laparosco-Endoscopic Meeting, Nice, June 2000.
- Middle East Medical Assembly, AUB-MC, May 2000.
- American College of Surgeons, San Francisco, October 1999.
- Middle East Medical Assembly, AUB-MC, May 1999.
- American College of Surgeons, Orlando, October 1998.
- Middle East Medical Assembly, AUB-MC, May 1998.
- American College of Surgeon, Chicago, October 1997.
- European Arabian Medical Congress, October 1997.
- Middle East Medical Assembly, AUB-MC, May 1997
- American College of Surgeons. San-Francisco, October 1996.
- Middle East Medical Assembly, AUB-MC, May 1996.
- American College of Surgeons. New Orleons, October 22-27, 1995.
- Middle East Medical Assembly, AUB-MC, May, 1995.
- The International Association of Angiology. 17th World Congress, London, April 3-7, 1995.
- Middle East Medical Assembly, March 1994.
- Moderator in the post graduate regional symposium on advanced laparoendoscopic surgery. Beirut, January 14, 15, 16, 1994.
- Coordinator of laparoscopic hernia course held on January 1994 at the American University of Beirut-Department of Surgery.
- Advanced laparoscopic colorectal surgery course held at Airedalle General Hospital. Keighley West Yord Shire United Kingdom on December 2-3, 1993.
- The XXVIII TH Middle East Medical Assembly, May 6-10, 1993.
- The Royal College of Surgeons of Edinburgh and the American College of Surgeons Joint Scientific Meeting. May 26-29, 1992
- The XXVII TH Middle East Medical Assembly, May 6-10, 1992.
- The First National Symposium on Laproscopic General Surgery, University Hospital of Wales,College of Medicine,Cardiff 28 June 1991.
- Laparoscopic Cholecystectomy. An Intensive Clinical Training Course, 17th, 18th, 19th, June 1991. Department of Surgery Western General Hospital Edinburgh.
- The British Association of Endocrine Surgeons Annual Meeting. London Hospital Medical College London E1, May 24, 1990.
- International Vascular Surgeons Meeting, April 1989. Chairing Cross London, United Kingdom.