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Dr. Joseph A. De Leo, Ph.D., C.Psych.

Clinical & Rehabilitation Psychologist

Dr. Joseph A. De Leo, Ph.D., C.Psych. is a licensed Clinical and Rehabilitation Psychologist with the College of Psychologists of Ontario. He received his PhD in Clinical Psychology from the University at Albany and completed a clinical internship at the Medical University of South Carolina (MUSC) as well a postdoctoral research at the University of North Carolina (UNC).


Joseph specializes in areas related to the assessment and treatment of addictions, trauma, and chronic pain conditions. He has extensive experience providing clinical and rehabilitation services in a variety of contexts (i.e., hospitals, private and community-based practices), supervising students and professional practice members, as well as teaching and providing instruction to health care organizations and Universities alike. 


More recently, Dr. De Leo completed a Certificate in Psychedelic Assisted Therapies and Research (CPTR) at the California Institute of Integral Studies (CIIS). As part of his training, he received mentorship from Dr. Jeff Guss as well as attended consultation groups with Dr. William (Bill) Richards and Dr. Charles (Chuck) Raison. Further, he has engaged in specialized training, including MAPS-based MDMA-Assisted Psychotherapy for PTSD as well as ketamine-assisted psychotherapy with local practitioners. 


Dr. De Leo maintains several active consultation groups, including with psychology and registered psychotherapy practice members, rehabilitation specialists, as well as psychedelic practitioners. He actively coordinates and participates in a men's group that emphasizes the importance of emotional awareness, openness, and honesty. 


To date, Dr. De Leo has published more than a dozen peer-reviewed articles and book chapters, including recently in the Journal of Psychedelic Studies and Journal of Psychoactive Drugs. He has served as the Director of Clinical Therapy at the first psychedelic-enhanced psychotherapy centre in Canada and is now focused on establishing a community-based psychedelic network of accessible health care services. 


Together with Dr. Mitch Earleywine he co-developed Integrative Ketamine Enhanced Psychotherapy (IKEP; De Leo & Earleywine, 2019) - currently being evaluated at the Centre for Compassionate Care.


Curriculum Vitae