Clinical Professor of Surgery at King Saud University
- Non-resident professor of Cardiothoracic Sciences (University of Lomaland), California, USA
- Visiting Professor of Cardiothoracic Surgery (Harvard University 1995)
- Vice-President of the International Society of Cardiothoracic and Vascular Surgery (1997)
- Member of the Panel of Examiners, the Royal College of Surgeons (1987-1994)
- Member of the Board of Directors of King Faisal Specialist Hospital and Research Center (2008-2011)
- Head of the Department of Cardiology and Head of Physicians at the Armed Forces Hospital in Riyadh, and then the Medical Director, the Chief of Physicians and the Head of Cardiac Surgery Department at Prince Sultan Cardiac Center (1979-2005)