Kalyssa Matheson

What clients leave with, working alongside Kalyssa Matheson, is the sense that someone actually stayed in the room with them — through the big feelings, the repetitive patterns, and the moments that are hard to put into words. A Registered Psychotherapist (Qualifying) based in Peterborough, Ontario, Kalyssa brings a grounded, direct presence shaped by years of working in high-pressure environments and a residential trauma setting before her clinical career. That background didn’t just build her résumé — it built her tolerance for real human chaos.

She works with teenagers, young adults, men, and women who are navigating anxiety, depression, mood and personality disorders, grief, codependency, anger, and the kind of attachment patterns that keep showing up uninvited in relationships. Her style is collaborative and curious, with room for humour when it fits. She draws on CBT, IFS, DBT, Narrative Therapy, and Acceptance and Commitment Therapy, weaving between approaches depending on what each person actually needs.

Kalyssa is registered with the College of Registered Psychotherapists of Ontario (#18178) and the Canadian Counselling and Psychotherapy Association (#11252681), and offers both in-person and virtual sessions at $150 each, with receipts available for benefits submission. Virtual sessions are available to clients across Ontario, British Columbia, Saskatchewan, Manitoba, and Newfoundland and Labrador.