Cost of an ADHD Assessment in Ontario

Private ADHD assessment fees in Ontario reflect the cumulative time and clinical expertise involved across the full assessment process — not a single appointment. A comprehensive assessment typically includes several components that occur over a number of weeks.

• Intake and history-taking: A structured clinical interview covering presenting concerns, developmental and academic history, functional impact across settings, and prior assessments or diagnoses. For children, parent input and teacher rating scales are gathered as part of intake.
• Standardized rating scales: Validated questionnaires completed by the client and, where relevant, by parents, teachers, or a partner — assessing attention, executive functioning, and behaviour across settings.
• Cognitive and attention testing: Performance-based measures of attention, working memory, processing speed, and executive functioning, administered by a qualified professional.
• Scoring and interpretation: Integrating results across all measures, considering alternative explanations, and formulating a coherent clinical picture that addresses the referral question.
• Written report: A comprehensive document summarizing background, methods, results, diagnostic conclusions where clinically supported, and practical recommendations for school, work, or daily functioning.
• Feedback session: A structured review of findings in plain language, with time to ask questions and discuss next steps.

When comparing fees between clinics, it is helpful to confirm which of these components are included in the quoted amount and whether there are separate charges for follow-up letters, additional correspondence with schools or employers, or report reprints.

Our fee for a comprehensive private ADHD assessment — including intake, standardized rating scales, cognitive and attention testing, scoring and interpretation, a written report, and a feedback session — is $2,400. This is a flat fee; there are no additional charges for the components listed above.

This fee applies to adult and adolescent ADHD assessments completed virtually across Ontario or in person at our GTA clinic locations. Scope is confirmed at intake — if your situation requires a more comprehensive evaluation (for example, if learning disabilities are also a question), the appropriate assessment type and any fee difference will be discussed before you commit.

For context, private ADHD assessments in Ontario vary considerably across providers. More complex or comprehensive evaluations — particularly those that also address learning disabilities or broader cognitive functioning — are typically higher in cost. Our fee reflects a focused, clinician-led ADHD assessment scoped to the referral question.

ADHD assessment fees vary across Ontario providers based on several factors. Understanding these can help you interpret quotes from different clinics and determine what level of assessment is appropriate for your situation.

• Scope of assessment: A focused ADHD assessment is typically less costly than a comprehensive psychoeducational assessment that also addresses learning disabilities, processing differences, or broader cognitive functioning. If multiple questions need to be answered, a broader scope may be more appropriate — and will be priced accordingly.
• Complexity of presentation: Assessments that involve multiple suspected conditions — for example, ADHD alongside anxiety, learning difficulties, or a complex developmental history — often require more testing time, additional collateral input, and more extensive interpretation.
• Age: Child and adolescent assessments often require more collateral input (parent interviews, teacher rating scales, school records) and may involve more testing sessions than adult assessments, which can affect total time and cost.
• Urgent or expedited timelines: When a clinic offers priority scheduling or expedited report completion — for example, for an upcoming exam accommodation deadline — there may be an associated premium.
• Provider and setting: Fees vary between solo practitioners, group practices, and hospital-affiliated clinics. Supervision structure and the seniority of the clinician involved also affect pricing.

In Ontario, ADHD can be diagnosed through different pathways — most commonly through a family physician, pediatrician, or psychiatrist, or through a private psychological assessment. These pathways differ significantly in cost, depth, and the documentation they produce.

Physician or psychiatrist diagnosis may be partially covered by OHIP and is typically focused on clinical assessment and medication management. It does not usually produce the detailed written report with standardized testing results that Ontario schools, universities, and employers require for accommodation documentation.

Private psychological assessment is fee-for-service and not covered by OHIP. It includes standardized cognitive and attention testing, a comprehensive written report with findings and recommendations, and documentation that meets the standards required by Ontario post-secondary institutions and workplaces for accommodation requests.

If your primary goal is documentation for accommodations — at school, university, college, or work — a private psychological assessment is typically the appropriate pathway. If your goal is medication management, a physician referral may be more suitable, and the two are not mutually exclusive. A private assessment report can be shared with your physician with your consent.

For more on this distinction, see our page on ADHD diagnosis and testing in Ontario.

Private ADHD assessments in Ontario are not covered by OHIP. However, some extended health or employee benefit plans may reimburse part of the cost, typically under psychology or psychological assessment services.

Coverage varies considerably between plans. Some policies reimburse up to a yearly maximum, some cover a percentage of the fee, and others have specific requirements about who must provide the service — for example, a Registered Psychologist rather than a supervised associate or psychometrist.

Before booking, it is advisable to contact your benefits provider directly and ask:

• Whether psychological assessment is an eligible service
• What portion of the fee is reimbursed and up to what annual maximum
• Whether the provider must hold a specific registration or designation
• How claims should be submitted — receipts, diagnostic codes, or other documentation

We can provide receipts that include the information required by most insurers, but we cannot guarantee that any particular claim will be approved. For a plain-language explanation of what OHIP covers and what it does not, see our guide on OHIP coverage for assessments in Ontario. University students in Ontario may also be eligible for the OSAP Bursary for Students with Disabilities (BSWD), which can offset the cost of a private assessment. Eligibility and the application process should be confirmed with your institution's financial aid or accessibility office.

When comparing ADHD assessment providers in Ontario, clear questions help you understand what is being offered and whether it meets your needs.

• What is included in the fee — intake, rating scales, cognitive testing, report, feedback session?
• Who conducts the assessment and who supervises and signs the report — and what are their credentials?
• Is the assessment focused on ADHD specifically, or does it also address learning disabilities and broader cognitive functioning?
• How many sessions are typically required and over what timeframe?
• Will the report meet the documentation standards of Ontario universities, colleges, and employers?
• Are sessions virtual, in-person, or a combination — and does this affect the fee?
• What is the deposit and cancellation policy?
• How does the clinic support you after the feedback session if you have further questions?

A private ADHD assessment represents a meaningful financial investment. When considering value, it helps to focus on what a thorough assessment actually provides — not just a diagnosis, but a clear clinical picture, documentation you can use, and recommendations that are specific to your situation.

For students, the practical value is often immediate: accommodation documentation that unlocks extended time, reduced-distraction testing, or other supports that allow performance to reflect actual ability. For adults, the value may be workplace accommodations, a clear explanation for long-standing difficulties, or a plan that actually addresses what is present rather than managing symptoms without understanding the cause.

No clinic can guarantee a particular diagnosis or that any report will be accepted by a given institution for accommodations. Value is found in the quality of the clinical process — careful assessment, evidence-informed interpretation, and practical recommendations that can be acted on.