He became the first chairman of The International Society for the History of Islamic Medicine in 2000, and at present is the society's honorary president.[10] In 2002, he founded and chaired the Gulf Heart Association, an organization which has been an affiliate of the European Society of Cardiology since 2005.[11] The HMC board built a auditorium inside the medical center naming it after him in recognition of his works in health education. The auditorium is named the Hajar Auditorium.[12]