Dr. Gilbert is settler of European descent and a public health physician grateful to be living and working on the lands of the Coast Salish peoples. Over his career Mark has worked as a field epidemiologist and medical health officer, and as a physician epidemiologist leading provincial STBBI surveillance systems in BC and Ontario. At the BCCDC, Mark leads and supports clinical prevention programs and research for marginalized populations facing health inequities and disproportionately affected by conditions including STBBI.

Mark is the medical lead for the Digital Health program at BCCDC and conducts research to support the development of internet-based approaches to sexual health service delivery, including B internet-based STBBI testing program GetCheckedOnline.  Mark also leads the Digital & Sexual Health Initiative, a public health research team at BCCDC that includes researcher, implementers, and people from communities that face challenges accessing appropriate health services. DISHI's main research focus is on programs and services related to digital public health and sexual health. Mark also co-leads the Digital Public Health Project at the UBC-CDC.  

Mark is also an affiliated researcher with the Community Based Research Centre.