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Dr. Richard Birtwhistle, MD, MSc, CCFP, FCFP   

Chair, CPCSSN Committee

Dr. Richard Birtwhistle is the principal investigator and Chair for CPCSSN. He is a family physician and clinical epidemiologist, and continues to practice family medicine. He is a Professor and Director of the Centre for Studies in Primary Care at Queen’s University. Dr. Birtwhistle received the Researcher of the Year award in 2010 by the College of Family Physicians of Canada in recognition of the successes of CPCSSN.

Beckles, Marissa

Marissa Beckles   

Administrative Assistant Chair’s Office

Marissa joined the CSPC in 2014 bringing a wide variety of knowledge and experience in office administration and organization. In her role as Administrative Assistant, she provides support for all members of the CSPC and also the CPCSSN project.



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Ken Martin   

Information & Technology Manager
Ken is the Information & Technology Manager for CPCSSN. He is responsible for the collection of EMR data from regional offices, supervising regional Data Managers, managing relationships with EMR vendors, and developing processes for the extraction, cleaning and uploading of EMR data into the central data repository as well as query/reporting tools. He has a BSc in Computer Science & Mathematics from Acadia University and a MSc in Computing & Information Science from Queen’s University.


Behrouz Ehsani

Behrouz Ehsani   

Senior Data Analyst
Behrouz is the senior biostatistician and adjunct professor. He obtained his BSc. and MSc with first honour in agricultural engineering and PhD. in biotechnology. Before joining to CPCSSN in 2016, Behrouz worked as postdoc researcher on several projects at Agriculture and Agri-food Canada and later at the Ontario Ministry of Agriculture, Food and Rural Affairs. He has collaborated actively with researchers for several healthcare projects, such as rare disease prediction, PTSD and Lyme disease..


John Q headshot

John Queenan, PhD (Clinical Epidemiology)   

Senior Epidemiologist

John Queenan is the Senior Epidemiologist for CPCSSN. John co-chairs the CPCSSN research committee with Dr. Walter Rosser. John received his graduate training in the Department of Population Health Sciences at Queen’s University, Kingston. His research interests focus on the psychosocial and clinical determinants of chronic disease in Canada.