Practitioner Credentials and Biographies

Tamah Markle  M.Ed., R.P., OCT, OAMHP(c)

Clinic Director / Psychotherapist / Certified Trauma Informed Practitioner


​Tamah's vision of co-operative, accessible resources and family support services in this community facilitated the establishment of the Colborne Street Clinic in 2008.


Tamah is a skilled psychotherapist with a passion for working with adolescents. She has extensive training and experience working with young people in various  contexts including education, psychotherapy and counselling. Tamah's private counselling practice includes adolescents, families and individuals. Consistent with the idea that healing takes place within the context of community, Tamah has developed a unique support/mentoring program that assists clients beyond the therapeutic process.

Leah Bergstrome B.A. Psych, M.S.W

Parent Advocacy/Consulting Services


Leah is passionate about helping children.  She utilizes her knowledge and experience with regards to the education system, and Applied Behaviour Analysis to ensure the long-term success of the children she serves, in school and throughout life.  Leah offers her services to parents and children, empowering them to speak out on behalf of their needs in the school setting with the goal of building respectful and equal partnerships between parents and school. 

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Kelly Bos MSW, RSW

Clinical Therapist


Kelly Bos is a clinical therapist focusing on individual, marriage, and family relationships. She helps people find meaning and joy in their relationships - with themselves and others. As a well-known relationship expert, she has appeared in a professional capacity in countless media markets as a guest and writer. Kelly is skilled at offering concrete tips and techniques for dealing with relationship issues, parenting struggles, or interpersonal work. She has a trauma informed practice and is trained in EMDR, CBT, Solution Focused Therapy, and Internal Family Systems. Her areas of specialty include: relationships, marriage, stress management, anger management, anxiety, depression, addictions, grief/loss, life transition, career counselling, fertility, trauma and self esteem.

Rebecca Brownell, M.T.S., R.P., RMFT
Psychotherapist/ Marriage and Family Therapist

Rebecca is a Registered Psychotherapist and Registered Marriage and Family Therapist and has been counselling for over 24 years.  Her practice includes working with individuals over the age of 18 as well as couples.  She specializes in the treatment of post trauma, anxiety, depression and couples counselling.  Her modalities of practice include Emotionally Focused Therapy, EMDR, Hypnosis and Neurofeedback.  Rebecca offers a respectful environment where people can feel safe to heal, learn new skills and tools and find joy, peace and balance in their lives again.

Randy Campbell, M.Div., R.P. , OAMHP(c) (AAMFT) 

Registered Psychotherapist/Marriage and Family Therapist


Randy is a mental health professional trained in psychotherapy and family systems, and the assessment and treatment of mental and emotional disorders within the context of marriage, couples and families. His practice includes, individual, marriage and family counselling. Randy draws from many different therapeutic methodologies, using client-centered and individualized approaches to therapy. His active listening skills and non-judgmental attitude allows for a safe and caring environment that puts clients at ease. Randy’s extensive training, professional, and life experiences equip him to assist individuals, couples and families in addressing the tough issues.


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Allison Clark, MSW, RSW 

Clinical Social Work/Psychotherapist


Allison offers services to youth, adults and couples experiencing symptoms of anxiety, depression, trauma (PTSD), and difficulties in relationships. Allison has training working with couples using Emotionally-Focused therapeutic techniques, as well as certification in Gottman Therapy (L1). Allison has additional experience working with men who have experienced trauma. Allison supports men, dads, and men-identified folk with processing traumatic experiences (accidents/injury, military service, emotional, physical, sexual abuse, etc.)
and responding to symptoms like anger, intense emotions, grief/loss, nightmares, flashbacks, and anxiety. Allison welcomes youth, adults, couples, and members of the LGBTQ(+) community to her practice. Allison uses narrative, mindfulness-based, and emotionally-focused therapeutic techniques to support clients as they grow, share, process, and move toward their own vision of wellness. Learn more about Allison at

Valerie Clark, B.A., B.Ed., OCT 

Special Education Resource Teacher / Irlen Screener


Valerie is a Special Education Resource Teacher with over 15 years’ experience working with students who have learning disabilities and differences. Some students with learning disabilities experience perceptual difficulties identified as Irlen’s syndrome that can affect reading achievement, learning and performance. Valerie is a certified Irlen screener and is qualified to make recommendations and accommodation in the school environment.


Shauna Crawford Boone, M.Div., R.P. (Qualifying)

Registered Psychotherapist (Qualifying)/ Marriage and Family Therapist/ Play Therapist 


Shauna is a Registered Psychotherapist (Qualifying) with an M Div. Clinical Counselling. She is trained as a Marriage and Family Therapist and has further training in Play Therapy and Child Psychotherapy. Shauna is currently pursuing further training in Play Therapy, Theraplay, and working towards the Registered Marriage and Family Therapist designation. She is also a Certified Provider of Autplay Therapy, a play therapy approach for children and adolescents on the autism spectrum and other neurodevelopmental disorders.

Barbara Davidson, M.H.SC., SLP

Speech Language Pathologist, Reg. with CASLPO


Barbara offers a spectrum of services such as assessment of speech, language and communication skills for children up to age 18, and family-centred treatment planning and therapy for speech and/or language development.


Barbara has many years of experience as a Speech Language Pathologist including:

Assessment and treatment of high-risk infants as part of a Neo-Natal Follow-Up team out of Orillia Soldiers Memorial Hospital and Royal Victoria Hospital; the development of augmentative communication programs with preschool and school-aged children; assessment and treatment of children who have a language-based learning disability or a cognitive disability; and delivery of articulation therapy for children with developmental apraxia of speech or motor-speech problems. Barbara offers Leading Parent Education sessions using the Hanen Parent Programs and is a member of a developmental team that assesses children with Autism.

Heidi Flynn, BMT, MTA

Accredited Music Therapist

Owner, Music Therapy Services of Simcoe County


Heidi is a Registered Psychotherapist, a Certified Music Therapist and the owner of Music Therapy Services of Simcoe County.  She has been providing music therapy services in communities across Simcoe County since 2001.  Her team of music therapists support individual of all ages and with a variety of needs. They specialize in providing music psychotherapy and developmental services to individual with special needs, neurologic rehabilitation (stroke or brain injury), and geriatrics with Alzheimer’s and dementia.


Heidi’s life experiences of having a brother with Down Syndrome and a son with complex needs including ASD enables her to understand the incredible impact music can have on the emotional well-being of all individuals, but especially those whom find it difficult to, or cannot communicate verbally.  Heidi has a great deal of experience working with individuals with a variety of emotional, developmental, and neurological needs.


When not singing, or playing one of her many instruments, Heidi enjoys spending time with her two children and husband, and watching hockey games.


Jerdelle Pilger 

Psychotherapist / Family and Marriage Therapist


Jerdelle is a Registered Psychotherapist (Qualifying) with an integrative, holistic approach to wellness.

Jerdelle understands that we all experience challenges in our lives and with a compassionate and non-judgemental approach, her hope is that you will find a safe space to work through your difficulties as you journey towards wellness. Jerdelle has worked with diverse communities: those who are experiencing physical and mental disabilities, refugees, impoverished, students, faith groups, and those in conflict with the law and their families.

Jerdelle is a member of the College of Registered Psychotherapists of Ontario and holds a Master of Divinity degree in Counselling. She is also a member in good standing with the Canadian Association for Marriage and Family Therapy and the Ontario Society of Registered Psychotherapists.

Pamela Robinson, B.Ed., OCT

Learning Support Services


Pamela is an Educational Consultant with qualifications in Special Education and Behavioural Science (ABA).  Pamela has been working with students with learning disabilities, autism, and complex needs since 2005 as a tutor, personal support coordinator, and program coordinator for Camp Winston.  Pamela offers individual or group tutoring sessions for students with learning disabilities integrating organizational skills and assistive technology into all lessons. Pamela is also a PlayLab facilitator, offering fun and educational workshops where children build confidence through success and accomplishment.

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Julie Thurston, B.Sc. ND.

Naturopathic Doctor


Julie Thurston is a registered Doctor of NatJulie Thurston is a registered Doctor of Naturopathic Medicine in Ontario, and is a member of both the Ontario and Canadian Association of Naturopathic Doctors. She has completed additional licencing requirements which enables her to prescribe regulated substances such as bio-identical hormones and thyroid replacement.  Julie maintains a general naturopathic practice for patients of all ages.  She has developed strong clinical experience with women`s health and preventative care for active older adults as well as digestive, emotional and learning/cognition related issues. Her careful explanation of diagnostic and treatment options allows her patients to become active participants in their healing process


Elizabeth Van Houtte, MSW, MS, Ph.D, RSW

Social Worker


Elizabeth provides an evidence-based practice for mental health, including depression, anxiety, coping skills, grief, loss, and life transitions. She has extensive experience assisting those with disabilities in returning to work, school, or training. In response to the increased stress of today’s employment settings, she also offers workplace wellness counselling. Elizabeth has more than thirty years of experience working with clients, and being involved in designing, managing, and delivering recovery-oriented mental health services. She has also been a university instructor in social work as well as a consultant for service programs and government agencies. Learn more about Elizabeth at