Autism Assessment in St. Catharines, Ontario

Compare 7 listings for autism assessment in St. Catharines, Ontario. Review available age groups, languages, settings and contact details, then confirm current services, fees and wait times with each provider.

A diagnostic assessment is the formal process of determining whether someone is autistic, usually involving interviews, questionnaires, and structured observation tools such as the ADOS-2. Assessments may be done by psychologists, developmental pediatricians, or specialized diagnostic teams. Wait times and costs vary widely between publicly funded and private options, so it helps to get on more than one list.

How to compare autism assessment in St. Catharines

Compare age eligibility, referral rules, clinician credentials, report scope, fees and wait times. Listing details can change, so confirm fit, availability and costs directly before making a decision.

  • Which regulated professional makes the diagnosis, and what autism-assessment experience do they have?
  • What interviews, records, questionnaires and appointments are included in the assessment?
  • Will the written report meet the requirements of the program, school or workplace that needs it?
  • Is a referral required, and what are the full cost, funding options and estimated wait time?

If you searched for an “autism diagnostic clinic near me,” use this directory to compare diagnostic services near St. Catharines by age group, referral requirements, regulated clinician, report format, accessibility, and current availability.

How to compare autism assessment clinics

An autism assessment or diagnostic evaluation can involve interviews, questionnaires, developmental history, and structured observation. The exact assessment process varies by clinic and by whether the patient is a child, youth, or adult. Ask what is included before joining a waitlist or paying a deposit.

  • Do you assess adults in my age group and with my communication or accessibility needs?
  • Is a physician referral required, and what are the current eligibility criteria?
  • Which regulated professional is responsible for the diagnosis and final report?
  • What records or informant interviews are requested, and what happens if childhood records are unavailable?
  • What is included in the quoted fee, and are feedback sessions or forms charged separately?
  • What is the current wait for intake and for the completed report?
  • Will the report include practical recommendations for accommodations and next steps?

Referral and diagnostic assessment pathways

Public diagnostic hubs and hospital services may require a referral form and apply their own eligibility rules. Private clinics may use direct intake, but families should still confirm who makes the diagnosis, which records are needed, what the written report includes, and whether the documentation fits the Ontario Autism Program or another service they plan to access.

Read the source-checked adult autism assessment guide for Ontario (last checked 2026-07-16), or browse related autism resources and services after a diagnosis.

Providers

  1. OT4KIDS

    OT4KIDS is a family-centred occupational therapy clinic in St. Catharines serving children of varying abilities in the Niagara Region. They provide assessment and treatment using play-based, evidence…

    Age groups
    early intervention 0 3, preschool 3 5, school age 6 12, teens 13 17
    Languages
    en
    Settings
    clinic

    Phone: +1 905-687-9176

    Provider website

  2. Lear Communication

    Lear Communication is a Southern Ontario-based speech and language therapy clinic celebrating 25 years of service. They provide speech and language therapy and diagnostic services to children…

    Age groups
    preschool 3 5, school age 6 12, teens 13 17, adults 18 plus
    Languages
    en
    Settings
    clinic, in home, school, community, telehealth

    Phone: +1 905-346-1008

    Provider website

  3. Little Steps OT Solutions

    Little Steps OT Solutions is a pediatric occupational therapy clinic specializing in fine motor skills, sensory processing, and self-care abilities for children with developmental disabilities or…

    Age groups
    preschool 3 5, school age 6 12
    Languages
    en
    Settings
    clinic, in home

    Phone: +1 289-273-2988

    Provider website

  4. Queenston Psychological Services

    Queenston Psychological Services is a psychology practice in St. Catharines, Ontario offering individual psychotherapy and psychological assessment. The practice collaborates with clients to develop…

    Languages
    en
    Settings
    clinic

    Phone: +1 905-658-6060

    Provider website

  5. Garden City Psychology

    Garden City Psychology provides assessment and therapy services for children, adolescents, adults, couples, and families. They offer research-supported approaches including Cognitive Behavioural…

    Age groups
    preschool 3 5, school age 6 12, teens 13 17, adults 18 plus
    Languages
    en
    Settings
    clinic, telehealth

    Phone: +1 905-937-2345

    Provider website

  6. Brookside Therapy & Assessments

    Brookside Therapy & Assessments is a healthcare group of clinical psychologists, neuropsychologists, psychotherapists, and supervised therapists providing psychological, neuropsychological, and…

    Age groups
    school age 6 12, teens 13 17, adults 18 plus, seniors 65 plus
    Languages
    en
    Settings
    clinic, telehealth

    Phone: +1 905-641-0789

    Provider website

  7. Edcommodate

    Edcommodate provides psychoeducational and diagnostic assessments for children, youth, and adults across Ontario. Services include autism diagnostic assessments, ADHD assessments, giftedness…

    Age groups
    preschool 3 5, school age 6 12, teens 13 17, adults 18 plus
    Languages
    en
    Settings
    clinic, telehealth

    Phone: +1 289-452-1500

    Provider website

Plan your next steps in Canada

Use the guides to prepare questions and find the original sources for assessment and support pathways.

Funding and intake in Ontario

Before paying a deposit, ask for the clinician's name, referral steps, written fees and cancellation terms. If you plan to use Ontario Autism Program funding, check the current program guidance and ask which services and invoices meet its requirements. A directory listing does not establish funding eligibility.

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Funding & support programs in Ontario

Browse the full provider directory