Dr. Marshall earned his PhD in Psychiatry (Research) from the University of Alberta in 2021, where his dissertation examined the impact of shared decision-making on health outcomes and risk factors for opioid use disorder among emerging adults with substance use and mental health concerns. His work was recognized with several awards, including the Dean’s Doctoral Student Award. He also holds a Master’s in Public Health (MPH) from the University of Memphis (USA), specializing in epidemiology, social determinants of health, and survey methodology. He completed his Bachelor’s in Neuroscience (BSc) at Rhodes College (USA) in 2015.
In addition to his consulting work, Dr. Marshall is a Senior Policy Analyst with the Government of Alberta (GoA), Ministry of Mental Health & Addiction, where he contributes to the development of grants and policies related to mental health, substance use, and addiction. Due to this role, Dr. Marshall’s consulting services are independent of GoA-funded projects and exclude involvement in Alberta-based harm reduction or addiction treatment programs. This separation ensures that his work with Marshall Clinical Research Consulting, Inc. remains unbiased and independent from his government responsibilities.
Dr. Marshall’s research interests span public health approaches to mental health and substance use, with a focus on harm reduction, early intervention, concurrent disorders, and drug policy. He currently serves as an assistant/associate editor for the Emerging Adulthood academic journal. With a strong background in systematic/scoping review methodology, study design, statistical modelling, and qualitative methods, Dr. Marshall’s diverse research experience includes graduate research, teaching assistantships, clinical volunteering at harm reduction centers, and clinical shadowing programs.
Outside of his academic and professional work, Dr. Marshall is an outdoor enthusiast, a proud dog owner (of two dogs, Timbit and Luther!), and enjoys spending time with his fiancé Alex. He was also a varsity soccer player and founded a Students for Sensible Drug Policy (SSDP) chapter during his time at Rhodes College and co-founded the Canadian SSDP chapter at the University of Alberta, demonstrating his commitment to leadership, education and community engagement.
