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Ottawa vs. Toronto
Ontario has two major pediatric autism diagnostic centres serving different regions. This guide compares CHEO (Ottawa) and Holland Bloorview (Toronto) to help families understand their options.
Direct answer
CHEO · Holland Bloorview · Verified 2026-08-10
In brief
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| Category | CHEO (Ottawa) | Holland Bloorview (Toronto) | Source |
|---|---|---|---|
| Location | Ottawa (401 Smyth Road) | Toronto (150 Kilgour Road) | CHEO · Holland Bloorview |
| Region served | Ottawa, eastern Ontario, western Quebec | Toronto, GTA, central Ontario | CHEO · Holland Bloorview |
| Assessment model | Team-based DSM-5 ASD assessment | Team-based DSM-5 ASD assessment | CHEO · Holland Bloorview |
| OHIP coverage | Yes, no cost to family | Yes, no cost to family | CHEO · Holland Bloorview |
| Referral required | Yes, GP or paediatrician | Yes, GP or paediatrician | CHEO · Holland Bloorview |
| Reported wait time | Not published; confirm directly with CHEO | Not published; confirm directly with Holland Bloorview | CHEO · Holland Bloorview |
| OAP registration needs a written diagnosis | Confirm with AccessOAP before relying on it | Confirm with AccessOAP before relying on it | CHEO · Holland Bloorview |
| French-language services | Yes, deep francophone integration | Limited | CHEO · Holland Bloorview |
| Post-diagnostic support | CHEO Research Institute family resources | ASDO (Autism Spectrum Disorder Support Organization) | CHEO · Holland Bloorview |
| Adult ASD diagnostics | Limited | Limited | CHEO · Holland Bloorview |
Wait times change frequently, confirm directly with each centre before making decisions.
The primary consideration is geography. CHEO serves Ottawa, eastern Ontario, and western Quebec. Holland Bloorview serves Toronto, the GTA, and central Ontario. Choose based on where you live, travelling from Ottawa to Toronto (or vice versa) for a diagnostic service that has an equivalent centre in your region is generally not recommended. Both centres produce DSM-5 ASD assessments accepted by AccessOAP.
Both are major Ontario teaching hospitals conducting team-based ASD assessments following DSM-5 criteria. Both are publicly funded, OHIP-covered, and produce reports accepted for OAP registration with AccessOAP. Neither centre is "better", both are leading diagnostic institutions serving their respective geographic regions.
Neither centre publishes a current wait estimate in the sources reviewed here. Ask the centre that serves your region about current availability.
OAP registration needs a written diagnosis from a qualified professional, and AccessOAP decides what it accepts, so confirm with AccessOAP before relying on either centre's report. With 71,263 children waiting for Core Clinical Services, families are advised to register with AccessOAP immediately upon receiving a diagnosis from either centre. The OAP waitlist clock starts at registration, not at diagnosis.
Source: MCCSS FOI via OAC · May 2026 · Updated
Families can ask each centre about its intake process and can contact private providers directly about availability and fees. A diagnosis must meet AccessOAP requirements before OAP registration.
The OAP waitlist clock starts at registration. With 71,263 children already waiting, starting the clock sooner matters.
Source: MCCSS FOI via OAC · May 2026 · Updated
How long does autism diagnosis take in Ontario?
Ontario does not publish one province-wide wait for a public autism diagnosis. Waits are not published centre by centre either, so ask the assessment centre for its current wait when you are referred. The diagnosis wait comes before OAP registration, so it is not counted in OAP waitlist figures.
Source: Ontario Autism Program · Open source record
Is private autism assessment faster in Ontario?
Fees and appointment availability vary by provider. Ask the assessment provider for a written fee quote and current wait before booking. Ontario does not publish a province-wide wait time for autism assessments.
Source: Ontario Autism Program; contact assessment providers for current fees and waits · Open source record
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