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Adjunct Assistant Professor
Faculty of Medicine & Dentistry - Psychiatry Dept
Overview
Area of Study / Keywords
Substance Use Addiction Recovery Harm Reduction Digital Mental Health Health Policy
About
Dr. Tyler Marshall is a researcher and evaluator specializing in mental health and addiction, with a focus on health services research, program evaluation, and person-centred systems of care. His work spans government, academic, and applied research settings, with an emphasis on improving access to care and strengthening evidence-informed decision-making. He has held leadership roles within the health system and has experience across a range of service models, including harm reduction, treatment, and recovery-oriented services.
Dr. Marshall’s research interests include substance use and recovery, concurrent mental health and substance use disorders, digital mental health, and the use of artificial intelligence to support screening, service navigation, and health system innovation. He is also interested in identifying predictors and risk factors for substance use disorders and translating this knowledge into more effective prevention and early-intervention approaches. His work is grounded in person-centred care that recognizes diverse goals and pathways to improved health and well-being. He has expertise in quantitative and mixed-methods research, biostatistics, and applied health research.
He completed postdoctoral fellowships at the University of Calgary, where he evaluated virtual overdose response services, and in the Department of Computing Science at the University of Alberta, where his work focused on artificial intelligence interventions for mental health. Dr. Marshall holds a PhD in Psychiatry from the University of Alberta, a Master of Public Health from the University of Memphis, and a Bachelor of Science in Neuroscience from Rhodes College.
He is particularly interested in bridging research, policy, and practice to improve mental health and addiction services and outcomes.
Research
Dr. Tyler Marshall’s research focuses on improving mental health and addiction systems through health services research, program evaluation, and applied policy research. His work examines access to care, recovery-oriented systems of care, harm reduction, and the effectiveness of mental health and addiction programs and services.
His research interests include substance use and recovery, digital mental health, and the use of artificial intelligence to support screening, service navigation, and decision-making. He uses quantitative, qualitative, and mixed-methods approaches, with expertise in biostatistics, real-world data, and applied health research.
Dr. Marshall is particularly interested in bridging research, policy, and practice to support evidence-informed decision-making and improve outcomes for individuals experiencing mental health and substance use challenges.
Teaching
Dr. Tyler Marshall has experience teaching research and evaluation methods, evidence synthesis, and qualitative thematic analysis for health and social science research. He has also taught university courses on cannabis use, including topics such as introduction to neuropsychopharmacology and substance use and society.
In addition to formal teaching, Dr. Marshall has supervised and mentored students and trainees across academic, government, and applied research settings. He has also delivered training and professional development to healthcare professionals, government staff, and interdisciplinary teams. His teaching emphasizes practical, applied skills and real-world applications.
Featured Publications
Tyler Marshall, Karin Olson, Adam Abba-Aji, Xin-Min Li, Richard Lewanczuk, Sunita Vohra
PLOS One. 2025 November; 10.1371/journal.pone.0336598
Tyler Marshall, Matthew Reeson, Alexandra Loverock, Ariana E. Lewis, Ian King, Raffay Ilyas, Celine Caruso Dixon, Dylan Viste, Brandon Azer, Ethan Chow, Fahad Safi, Megan Kennedy, Adam Abba-Aji, Andrew J. Greenshaw
The Canadian Journal of Psychiatry. 2025 May; 10.1177/07067437241300957
Chelsea Ann Stellick (Bedrejo), Andrew Greenshaw, Mike Paulden, Sidney Yap, R. Tyler Marshall, Janice Y. Kung, Eldon Spackman
PLOS ONE. 2024 September; 10.1371/journal.pone.0307761
Kirsten Marchand, Roxanne Turuba, Daphne Hui, Holly Gunn, Mary Doug Wright, Tyler Marshall, Danya Fast, Rodney Knight, David C. Marsh, Roberto Sassi, Steve Mathias, Skye Barbic
Journal of Adolescent Health. 2024 September; 10.1016/j.jadohealth.2024.07.013
Raymond Yan, Tyler Marshall, Atul Khullar, Travis Nagle, Jake Knowles, Mai Malkin, Brittany Chubbs, Jennifer Swainson
Therapeutic Advances in Psychopharmacology. 2024 January; 10.1177/20451253241231264
Nathan Rider, Fahad Safi, Tyler Marshall, Stephanie Jones, Boogyung Seo, Dylan Viste, Pamela E. Taplay, William Rioux, S. Monty Ghosh
The American Journal of Drug and Alcohol Abuse. 2023 November; 10.1080/00952990.2023.2271642
Raman Dhaliwal, Sidney Yap, Fernanda Talarico, Huda Al-Shamali, Robert Mcweeny, Matthew Reeson, Reham Shalaby, Teresa Chen, Elena Spronk, Rayven Snodgrass, Eileen Tu, Taylor Erick, Tyler Marshall, Megan Kennedy, Andrew J Greenshaw, Olga Winkler, Lisa Burback
Journal of Medical Internet Research. 2023 November; 10.2196/40710
Tyler Marshall, Karin Olson, Erik Youngson, Adam Abba‐Aji, Xin‐Min Li, Sunita Vohra, Richard Lewanczuk
Early Intervention in Psychiatry. 2023 October; 10.1111/eip.13385
Ali Zamani, Matthew Reeson, Tyler Marshall, Mohamad Ali Gharaat, Alex Lambe Foster, Jasmine Noble, Osmar R. Zaiane
2023 September; 10.1145/3570945.3607324
Alexandra Loverock, Tyler Marshall, Dylan Viste, Fahad Safi, Will Rioux, Navid Sedaghat, Megan Kennedy, S. Monty Ghosh
Drug and Alcohol Dependence. 2023 September; 10.1016/j.drugalcdep.2023.110878
Jonathan Jin, Department of Psychiatry, University of Alberta, Edmonton, Canada, Huda F. Al-Shamali, Robert McWeeny, Jeff Sawalha, Reham Shalaby, Tyler Marshall, Andrew J. Greenshaw, Bo Cao, Yanbo Zhang, Michael Demas, Serdar M. Dursun, Liz Dennett, Raheem Suleman, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada, Scott Health Sciences Library, University of Alberta, Edmonton, Canada, Department of Psychiatry, University of Alberta, Edmonton, Canada
Psychiatry and Clinical Psychopharmacology. 2023 July; 10.5152/pcp.2023.22583
Tyler Marshall, Dylan Viste, Stephanie Jones, Julia Kim, Amanda Lee, Farah Jafri, Oona Krieg, S. Monty Ghosh
Harm Reduction Journal. 2023 June; 10.1186/s12954-023-00807-9
OSF Registries. 2023 January; 10.17605/osf.io/sruzc
Lisa Burback, Raman Dhaliwal, Matthew Reeson, Taylor Erick, Kelly Hartle, Ethan Chow, George Vouronikos, Nicole Antunes, Tyler Marshall, Megan Kennedy, Liz Dennett, Andrew Greenshaw, Lorraine Smith-MacDonald, Olga Winkler
Current Research in Behavioral Sciences. 2023 January; 10.1016/j.crbeha.2023.100102
OSF Registries. 2023 January; 10.17605/osf.io/u6rsb
Matskiv G, Krieg O, Viste D, Ghosh SM
CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne. 2022 November; 10.1503/cmaj.220579
Open Science Framework. 2022 August; 10.17605/osf.io/3hqev
OSF Registries. 2022 January; 10.17605/osf.io/pkuhb
Tyler Marshall, Adam Abba-Aji, Robert Tanguay, Andrew J. Greenshaw
The Canadian Journal of Psychiatry. 2021 December; 10.1177/0706743721999571
Hancock M, Kinnard EN, Olson K, Abba-Aji A, Rittenbach K, Stea JN, Tanguay R, Vohra S
Journal of substance abuse treatment. 2021 November; 10.1016/j.jsat.2021.108646
Tyler Marshall, Chelsea Stellick, Adam Abba-Aji, Richard Lewanczuk, Xin-Min Li, Karin Olson, Sunita Vohra
BJPsych Open. 2021 November; 10.1192/bjo.2021.1028
OSF. 2021 January; 10.17605/osf.io/ck8eu
Addictive Behaviors. 2019 March; 10.1016/j.addbeh.2018.12.019
BMJ Open. 2018 October; 10.1136/bmjopen-2018-022267
View additional publications
Research Students
Currently accepting undergraduate students for research project supervision.
For Fall 2026, Dr. Marshall has limited capacity for additional undergraduate and graduate students. Current opportunities primarily involve JARA, an AI-focused research and development program in substance use, mental health, and digital health, conducted with the broader research team led by Dr. Andy Greenshaw. Priority will be given to students with technical skills relevant to JARA development and evaluation, including computing science, software development, data science, machine learning, natural language processing, and human-computer interaction. Students with interests in digital health, implementation science, or AI evaluation are also encouraged to reach out. Capacity for additional students focused primarily on substance use, mental health, or clinical research is currently limited, although strong applicants with complementary skills are still welcome to inquire. Interested students should email a brief statement of interest, CV, and unofficial transcript.