Ms. Lynne Castonguay, MSW,RSW


EMDR Certified Therapist

Online Therapy

About Me

I stand ready, eager, and equipped to accompany you on your road to recovery. My toolkit for therapy is extensive, offering a range of modalities tailored to navigate the complexities of trauma and the difficult journey of withdrawal management. In my practice, while honouring the holistic insights offered by traditional Indigenous healing practices, my focus is on client-centered therapeutic techniques designed to address the nuanced challenges of trauma and addiction. I believe in an anti-oppressive, trauma-informed care that acknowledges the intricate dance of recovery where the rhythm is often set by the individual’s unique experiences and needs. With a fundamental belief in your inner knowledge and the resilience of the human spirit, I recognize that sometimes what’s needed most is a supportive guide, someone to offer not just empathy but also evidence-based strategies and a steady presence through the turbulent phases of detoxification and beyond. Together, we can work towards healing, balance, and a reclamation of your inner strength.

Education & Experience

Lynne Castonguay, M.S.W., R.S.W., C.C.A.C., is a dedicated Registered Social Worker with deep roots in Iroquois Falls and an unwavering commitment to the community of Timmins, Ontario. An alumna of Wilfrid Laurier University, Lynne earned her Master’s Degree in Social Work through the esteemed Indigenous Field of Study Program. As a Certified Addiction Counsellor and a proficient EMDR practitioner, she brings a nuanced understanding of crisis and trauma interventions to her practice, offering a sensitive approach to those grappling with the enduring effects of colonization and the legacy of residential schools. With a career steeped in aiding adults and families to confront and overcome addiction and mental health challenges, Lynne stands as a beacon of hope and guidance. Her expertise is not limited to the long-term healing journey; she is also a critical first responder in the wake of traumatic events, from assaults and accidents to robberies, providing immediate and compassionate care. Lynne embodies the role of a helper and facilitator, empowering personal healing journeys from trauma with both professionalism, compassion and empathy.

Specialty Area

  • Abuse/Neglect
  • ADD/ADHD/Disruptive Behavior Disorders
  • Addictions
  • Adoption
  • Alcohol/Substance Abuse
  • Anger Management
  • Anxiety/Panic Attacks
  • Autism Spectrum
  • Bipolar Disorder
  • Depression
  • Dissociative Disorders
  • Domestic Violence
  • Eating Disorders
  • Gender Identity
  • Grief/Loss/Mourning
  • Mood Disorders
  • Obsessive-Compulsive Disorders
  • Phobias
  • Posttraumatic Stress Disorder (PTSD)
  • Self-Harm
  • Spirituality
  • Stress Management
  • Suicide Risk
  • Traumatic Incident

Population Served

  • Adolescents (13-17)
  • Adults
  • Juvenile Correctional Facility
  • LGBTQ+
  • Seniors


  • English
  • French


Canadian Based Insurance