Autism Assessment in Whitby, Ontario

Compare 6 listings for autism assessment in Whitby, 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 Whitby

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 Whitby 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. New Beginnings Ontario - Shannon Mossip Psychology

    Shannon Mossip Psychology & Associates provides individual and family therapy and psychological assessments in Whitby, Ontario. Services include assessment and treatment for autism spectrum disorder…

    Languages
    en
    Settings
    clinic, telehealth, in home

    Phone: +1 905-242-8727

    Provider website

  2. Monarch House Whitby

    Monarch House is a neurodiversity-affirming provider offering autism diagnostic assessment, ABA, speech-language pathology, occupational therapy, and psychotherapy across multiple Ontario and Western…

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

    Phone: +1 365-602-8017

    Provider website

  3. Lake Ridge Community Support Services

    Lake Ridge Community Support Services provides individualized, quality behavioral services for children, youth, and adults with autism and intellectual disabilities. They offer funded Ontario Autism…

    Age groups
    early intervention 0 3, preschool 3 5, school age 6 12, teens 13 17, adults 18 plus
    Settings
    clinic

    Phone: +1 905-666-9688

    Provider website

  4. The Insight Clinic

    The Insight Clinic is a multidisciplinary mental health and developmental services provider in Whitby, Ontario, serving children, teens, adults, and seniors. They offer ABA therapy, psychotherapy…

    Age groups
    preschool 3 5, school age 6 12, teens 13 17, adults 18 plus, seniors 65 plus
    Languages
    en, es
    Settings
    clinic, telehealth

    Phone: +1 289-483-0133

    Provider website

  5. The Portia Learning Centre - ABA Therapy

    The Portia Learning Centre in Whitby provides personalized ABA therapy for children with autism spectrum disorder, developmental delays, and behavioral challenges since 2006. Services include…

    Age groups
    preschool 3 5, school age 6 12, teens 13 17
    Languages
    en
    Settings
    clinic, in home, school

    Phone: +1 905-721-1717

    Provider website

  6. Durham Psychology Wellness Centre

    Durham Psychology Wellness Centre is a psychotherapy and mental health clinic in Whitby offering evidence-based treatment by clinical psychologists, social workers, psychotherapists, and registered…

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

    Phone: +1 289-210-7881

    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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