Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
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Marie Pierre Castonguay

Registered Social Worker, MSW, RSW

Verified by Psychology Today Verified by Psychology Today
4 Endorsed
Call Me
Let's Connect (343) 304-6337
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Available both in-person and online
Ottawa, ON K2A
Are you feeling a pull toward more clarity, more connection, more ease in how you move through your relationships and your life? Therapy can be a space to turn toward that pull with intention. Whether you’re exploring relational patterns, preparing for partnership, moving through a life transition, or making sense of loss, our work together invites a deeper understanding of yourself and the ways you connect with others. For couples, this is a place to strengthen communication, deepen intimacy, and build a shared foundation with care and awareness. Together we can slow things down and listen more closely to what’s unfolding.
With over a decade of experience as a registered social worker, I work with individuals and couples using a psychodynamic, somatic, attachment-based, and trauma-informed approach. My focus is on supporting meaningful, lasting change and helping you cultivate relationships that feel grounded, connected, and fulfilling.
My style is warm, grounded, and direct. I value creating a space where you feel safe and supported, while also inviting thoughtful reflection and gentle challenge around the patterns and beliefs shaping your experience. If this speaks to you, I invite you to reach out and explore whether we’re a good fit.
Call or Marie Pierre Castonguay now for a free 15 minute consultation - (343) 304-6337

My Practice at a Glance

Available both in-person and online

Ottawa, ON K2A

(343) 304-6337

1200 Colonial Road

Navan, ON K4B map

My website
I specialize in Relationship Issues, Attachments and Trauma and PTSD 
$185 Per Session  
I see individuals, couples and families  
Let's Connect (343) 304-6337
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW

My Practice at a Glance

Available both in-person and online

Ottawa, ON K2A

(343) 304-6337

1200 Colonial Road

Navan, ON K4B map

My website
I specialize in Relationship Issues, Attachments and Trauma and PTSD 
$185 Per Session  
I see individuals, couples and families  

Finances

Fees

  • Individual Sessions $185
  • Couple Sessions $195

Payment Methods

ACH Bank transfer
"
Please verify your health insurance coverage when you arrange your first visit.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337
"
Please verify your health insurance coverage when you arrange your first visit.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337

Qualifications

  • Verified by Psychology Today Membership with Ontario College of Social Workers & Social Service Workers Marie Pierre Castonguay
  • Education and Years In Practice

  • Attended King's University College, MSW
  • Additional Credentials

  • Certificate from Somatic Experiencing (SEP) 2025
  • Certificate from PACT Level 2 2022
"
With over a decade of experience as a registered social worker in Ontario, I have advanced training in PACT, Somatic Experiencing, attachment-based, and trauma informed therapies. I work with individuals and couples to explore relational patterns and support meaningful change.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337
"
With over a decade of experience as a registered social worker in Ontario, I have advanced training in PACT, Somatic Experiencing, attachment-based, and trauma informed therapies. I work with individuals and couples to explore relational patterns and support meaningful change.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337

Specialties and Expertise

Top Specialties

  • Relationship Issues
  • Attachments
  • Trauma and PTSD

Expertise

  • ADHD
  • Anxiety
  • Codependency
  • Coping Skills
  • Depression
  • Divorce
  • Family Conflict
  • First Responders
  • Grief
  • Infidelity
  • Life Transitions
  • Marital and Premarital
  • Men's Issues
  • Neurodivergence
  • Peer Relationships
  • Self Esteem
  • Sexual Abuse
  • Spirituality
  • Stress
  • Women's Issues
"
Our work together is collaborative and tailored to your needs, often focusing on understanding relational patterns, processing emotional experiences, and gently challenging beliefs that may be holding you back. Clients often leave with greater clarity, deeper connection, and a stronger sense of alignment in their lives and relationships.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337
"
Our work together is collaborative and tailored to your needs, often focusing on understanding relational patterns, processing emotional experiences, and gently challenging beliefs that may be holding you back. Clients often leave with greater clarity, deeper connection, and a stronger sense of alignment in their lives and relationships.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337

4 Endorsements

Samantha Memedoska
Samantha Memedoska
Registered PsychotherapistBA HonsMARP
Such a great professional to work with! Highly skilled and empathetic.
Alicia Shameer
Alicia Shameer
Registered PsychotherapistRPMACP
Marie-Pierre is warm and compassionate, and provides a non-judgmental space.
Jenna Dekoster
Jenna Dekoster
Registered Social WorkerMSWRSW
I truly enjoy working with Marie Pierre! She is a skilled individual and couples therapist, who provides clients with an environment that feels safe and supportive.

Client Focus

Age

Preteen
Teen
Adults
Elders (65+)

Participants

Individuals
Couples
Family

I also speak

French

Age

Preteen
Teen
Adults
Elders (65+)

Participants

Individuals
Couples
Family

I also speak

French

Treatment Approach

Types of Therapy

  • Attachment-based
  • Clinical Supervision and Qualified Supervisors
  • Cognitive Behavioural (CBT)
  • Emotionally Focused
  • Family / Marital
  • Family Systems
  • Gottman Method
  • Internal Family Systems (IFS)
  • Narrative
  • Psychobiological Approach Couple Therapy
  • Psychodynamic
  • Relational
  • Somatic
  • Strength-Based
  • Trauma Focused
"
My work is inspired by PACT (Psychobiological Approach to Couple Therapy), Narrative Therapy, Somatic Experiencing, and attachment-based therapy. Therapy with me is collaborative, attuned, and paced to your needs. Together, we'll explore relational patterns, deepen emotional awareness, and create space for new ways of relating to yourself and others.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337
"
My work is inspired by PACT (Psychobiological Approach to Couple Therapy), Narrative Therapy, Somatic Experiencing, and attachment-based therapy. Therapy with me is collaborative, attuned, and paced to your needs. Together, we'll explore relational patterns, deepen emotional awareness, and create space for new ways of relating to yourself and others.
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call or for a free 15 minute consultation now - (343) 304-6337

Location

Primary Location

Ottawa, ON K2A

(343) 304-6337

Additional Location

1200 Colonial Road

Navan, ON K4B

(343) 304-6337

Nearby Areas

Towns/Cities

Postal Codes

Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call for a free consultation now - (343) 304-6337
Photo of Marie Pierre Castonguay, Registered Social Worker, MSW, RSW
Marie Pierre Castonguay
Registered Social Worker, MSW, RSW
Call for a free consultation now - (343) 304-6337