An image of Dr. Jess Fiedorowicz

Jess Fiedorowicz

MD, PhD

Scientist, Neuroscience

Ottawa Hospital Research Institute

Head and Chief, Department of Mental Health

The Ottawa Hospital

Professor and Tier 1 Clinical Research Chair in Bipolar Disorders and Metabolism, Department of Psychiatry

School of Epidemiology and Public Health

Research Groups

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Research Group
Hatching Ideas Lab
The Hatching Ideas Lab is a research lab headed by Dr. Simon Hatcher based out of the Ottawa Hospital Research Institute. Our program of research f...

Bio

Jess Fiedorowicz graduated summa cum laude from Marquette University and with Honors in Research from the Medical College of Wisconsin. He completed a medicine (transitional year) internship at St. Luke’s Hospital in Milwaukee, Wisconsin followed by a psychiatry residency at the Johns Hopkins Hospital, where he additionally served as a chief resident. He completed a fellowship in the Clinical Neurobiology of the Major Psychoses at the University of Iowa and concurrently completed an M.S. in Clinical Investigation. He obtained a Ph.D. in Translational Biomedicine and then a graduate certificate in biostatistics from the University of Iowa where he later became faculty in departments of psychiatry, epidemiology, and internal medicine and still holds an adjunct appointment.  In Iowa, he was also the Director of the Mood Disorders Center and co-director of Workforce Development for the Institute of Clinical and Translational Science.

Dr. Fiedoworicz arrived in Ottawa in August 2020 where he became the Head and Chief of the Department of Mental Health at the Ottawa Hospital and a Professor and Senior Research Chair in Adult Psychiatry in the Department of Psychiatry at the University of Ottawa. He is a scientist in the Clinical Epidemiology and Neurosciences Programs of the Ottawa Hospital Research Institute and a member of the uOttawa Brain & Mind Research Institute. Outside of his roles in Ottawa, he has been a member of the U.S. Food and Drug Association Psychopharmacologic Drugs Advisory Committee since 2016. Clinically, he is board certified in psychiatry by the American Board of Psychiatry and Neurology and in obesity medicine by the American Board of Obesity Medicine.

While in the U.S., he was an advocate with Physicians for a National Health Program and volunteered in the local free mental health clinic.  He is pleased to be working in a provincial system that provides universal access to health care and doing so within the collegial and collaborative environment of The Ottawa Hospital with its commitment to practice-changing research. Jess values taking an interdisciplinary, team science approach to his work.

Research Goals and Interests

His content expertise centers around morbidity and mortality (especially cardiovascular disease and suicide) in bipolar disorder, while his methods expertise relates to quantitative methods in epidemiology. He values taking an interdisciplinary, team science approach to his work.


News


Publications

Hospital-based care for hallucinogens and risk of mania and bipolar disorder: A population-based cohort study

2025-12-02 Go to publication

Feasibility and accuracy of the ASERT digital questionnaire in mood tracking for a longitudinal research study on bipolar disorder

2025-12-01 Go to publication

Efficacy, all-cause discontinuation, and safety of serotonergic psychedelics and MDMA to treat mental disorders: A living systematic review with meta-analysis

2025-12-01 Go to publication

SNP-associated differential methylation in ARHGEF38 : insights into genetic-epigenetic interactions

2025-06-13 Go to publication

Investigating the Relationship Between DNA Methylation, Genetic Variation, and Suicide Attempt in Bipolar Disorder

2025-06-06 Go to publication

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