Dr. David Chan is an Associate Professor of the Department of Family Medicine at McMaster University. He also works as a family physician at Stonechurch Family Health Centre.

He worked as a software engineer prior to entering the field of medicine. He has devoted the past 19 years in developing Free/Open Source Software (FOSS) solutions to enhance patient care. He has developed a set of web-based applications collectively known as OSCAR (Open Source Clinical Applications and Resources). These include a clinical management system, a clinical resource database, and a patient health record portal. He is working on a number of web-based decision support tools to assist physicians at the point of care.

His other teaching and research interests include evidence-based medicine and care of the elderly. He loves cycling and is a marathon runner.