Dr Mohamed Shajahan Bin Mohamed Yasin is Professor and Head of Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia. Professor Dr Shajahan Yasin joined Monash University Malaysia full-time in October 2005. He was previously the Chief Medical Officer to the largest private General Practice Group in the country with over 100 doctors, where he was involved in quality improvement initiatives and audit of practice. He spent three years in the Department of Community Medicine and General Practice at Monash University in Clayton, Victoria between 1996 and 1999 as a lecturer where he was involved in Primary Care Research and Clinical Epidemiology. He was the Chairman of the Vocational Training Program (VTP) at the Academy of Family Physicians for seven years from 1988 to 1996, and was instrumental in converting the VTP program into a distance learning program.

He has a couple of his HDR students working in these areas. He is also a Director of the South East Asia Community Observatory (SEACO), which is an internationally funded project based on the highly successful Demographic and Health Surveillance Systems (DHSS) in other countries. SEACO is based in the town of Segamat in Johor, Malaysia.