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Marie Pierre Castonguay MSW, RSW

Registered Social Worker

Independent Associate

FEE : $160/hr
  • Individual Therapy, Child Therapy, Couples Therapy, Supervision (Ages 12+)
  • Relationships, Life Transitions, Anxiety, Self-Compassion, Sexuality

Together, we will build a comfortable, non-judgmental environment where you can feel safe and supported as you navigate challenging circumstances.

Have you noticed changes in your mood and energy levels? Are you finding yourself struggling to maintain connections in your relationships? Sometimes life can become overwhelming, whether that’s because of our emotions, thoughts, behaviours, difficulties within our relationships or traumatic life events. Whichever the reason, we can unpack it one step at a time. Together, we will build a comfortable, non-judgmental environment where you can feel safe and supported as you navigate challenging circumstances.
I am a Social worker with over ten years of experience working with individuals, couples and families. I am particularly interested in relationships, including the relationship we learn to develop with ourselves. My therapeutic approach stems from a strengths-based lens, incorporating narrative and attachment-based perspectives where appropriate.

Finding the right therapist is like any relationship – it’s about connection. I invite you to reach out and see if we are the right therapeutic fit.


2020-Present: Ontario College of Social Workers and Social Service Workers

2020-Present: Canadian Association of Social Workers


2021: M.A. Social Work, King's University College

2019: B.A. Social Work, University of Regina

2011: Diploma of Social Work, La Cite

Professional Development

2024: Somatic Experiencing - Intermediate 3

2023: Somatic Experiencing Intermediate

2022-Present: PACT group supervision with Dr.Stan Tatkin

2022: PACT Level 2

2022: Somatic Experiencing Beginners Completed

2022: CASWE-ACFTS Field Instructor Course

2022: PACT Level 1

2021: Narrative Therapy - Theory and Practice

2021: Cognitive-Behaviour Therapy Tools Workshop

2020: Naloxone Training

2020: Crisis Intervention Training

2020: ASIST Suicide Prevention Training Re-certification

2019: Cognitive Behaviour Therapy (CBT) level one – Wilfrid Laurier University

2019: Intro to Gottman Theories

2019: Dialectical Behavior Therapy (DBT) beyond basics

2019: Managing Complex Cases - CASA

2019: Portable Play-Based School and Outreach Counselling

2019: Brain Story Certification

2018: Self-Injury Behaviour in Youth – Issues and Strategies

2018: Dialectical Behavior Therapy (DBT) Training

2017: Post Traumatic Play Certificate

2016: Mental Health First Aid

Relevant Work Experience

2021-Present: Private Practice

2015-2020: School counsellor

2014: Dementia respite worker

356 Woodroffe Ave., Entrance G/H, Suite 201, Ottawa, ON, K2A 3V6
(613) 699-0060


We welcome positive reviews of our therapists.
If at any point you have any concern or comments for improvements regarding the services received, please contact Yoshie Martinez at (613)-263-2344 -
We're just one text, call, or email away!

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