About the Ministry
Interim Chief Medical Officer of Health
Dr. David Williams, BSc., MD, MHSc, FRCPS
Dr. David Williams is currently the Interim Chief Medical Officer of Health for the province of Ontario. Dr. Williams returned to this position on July 1, 2015 having been the Medical Officer of Health for the Thunder Bay District Board of Health from October 2011 to June 30, 2015. Prior to that, Dr. Williams held the position of Associate Chief Medical Officer of Health, Infectious Disease and Environmental Health Branch Director at the Ministry of Health and Long-Term Care from 2005 to 2011. During this time he was also the Acting Chief Medical Officer of Health for Ontario from November 2007 to June of 2009. Prior to working at the province, Dr. Williams was the Medical Officer of Health and CEO for the Thunder Bay District Health Unit from 1991 to 2005.
Dr. Williams is a four time graduate of the University of Toronto receiving his BSc., MD, Masters in Community Health and Epidemiology (MHSc) and Fellowships in Community Medicine/Public Health and Preventive Medicine (FRCPS).
Prior to entering public health, Dr. Williams practiced hospital based clinical practice as a GP and GP Anaesthetist at the Sioux Lookout Zone Hospital and also in International Health at the United Mission to Nepal Mission Hospital, Tansen Nepal.