Autism Spectrum Disorder Assessments
Professional and Accessible Autism Assessments for Adults and Teens in Canada
If you’ve ever wondered whether you might be autistic or want more clarity about your experiences, an autism assessment can be an empowering step toward understanding yourself. At Mountainside Wellness, we provide autism assessments for teens and adults across Canada (and worldwide in English) that are compassionate, affirming, and evidence-based.
Assessments are led by Jeremy Williams, a Master Practitioner in Clinical Counselling, ADHD Clinical Services Provider, and Autism Spectrum Disorder Clinical Specialist. Jeremy combines professional expertise with lived experience to create a safe, respectful, and trauma-informed space for discovery.
Each assessment includes two relaxed online sessions where we explore your developmental history and current experiences using structured, standardized tools that cover ten key areas. The process is conversational yet thorough, ensuring your story is fully understood. You’ll receive a comprehensive report with insights, impressions, and personalized recommendations for skills, tools, treatments, and psychoeducation. We can also include documentation to support accommodations at school, work, or in healthcare settings.
The total cost is $1,000, with a sliding-scale option available. This is far below the national average of $2,000 to $3,500, reflecting our commitment to accessible, inclusive care for Indigenous, BIPOC, 2SLGBTQIA+, disabled, and neurodivergent communities throughout Canada.
While this is not a formal diagnosis, it can streamline future diagnostic steps, giving you a strong foundation for next stages of support. Many clients find the process itself deeply validating, offering both clarity and direction. The report and treatment plan provide an in-depth understanding of your neurodivergence and practical guidance to help you build confidence and thrive.
Even if autism is not indicated, the plan remains valuable; offering tools and strategies that improve self-awareness, resilience, and well-being. Many of the treatments, education, and skill-building options recommended are also available directly through Mountainside Wellness, allowing you to continue your journey with trusted, affirming support.
An autism assessment with Mountainside Wellness is more than an evaluation—it’s a compassionate step toward clarity, self-acceptance, and meaningful growth.
Sources and tools used in the assessment include:
DSM-5-TR (Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, Text Revision): Defines diagnostic criteria for Autism Spectrum Disorder in North America, including persistent challenges in social communication and restricted, repetitive behaviours.
Autism Diagnostic Observation Schedule (ADOS-2): A semi-structured, gold-standard tool for observing communication, social interaction, and play.
Autism Diagnostic Interview – Revised (ADI-R): A structured interview conducted with caregivers to explore developmental history and behavioural patterns.
Social Responsiveness Scale (SRS-2): Measures the severity of social impairment associated with autism.
Gilliam Autism Rating Scale (GARS-3): Frequently used in school and clinical settings to assess characteristics of autism.
Canadian Autism Spectrum Disorder Alliance (CASDA) and Canadian Paediatric Society: Provide national best practices for early identification and community-based models of care.
World Health Organization’s ICD-11 (International Classification of Diseases): An international diagnostic framework used alongside the DSM-5.
Use the form below for more information or you can book your initial intake by CLICKING HERE.