Khaled graduated from King Abdulaziz University school of dentistry in 1993. In 2001 he got a certificate of endodontics from Harvard school of dental medicine and Doctor of Science degree in Oral biology-immunology from Harvard University, school of medicine. At the same year, he was awarded the Alvin Krakow award from Harvard University for outstanding achievements in research, clinical care, and professionalism in endodontics.
Currently, Khaled is a professor and chair of endodontics at King Abdulaziz University. Director for postgraduate studies and training programs in endodontics and deputy director for the osteoporosis research center in KSA. Khaled holds private practice limited to micro-endodontics in Jeddah, Saudi Arabia.
Khaled has been lecturing extensively nationally and internationally since 2003. Has contributed with more than 280 lectures and 77 full day or two days endodontic courses with a hands-on training component. He also has many indexed publications in the field of clinical endodontics and in the fields of basic science related to endodontics.