Direct answer
Autism diagnostic assessments are OHIP-covered when conducted through Ontario's 5 regional diagnostic hubs, hospital-based developmental clinics, or participating community agencies. Wait times for OHIP-covered assessments are typically 12-24 months. Private autism assessments through registered psychologists cost $2,500-$5,000 with wait times of 2-8 weeks.
Ontario has 5 regional diagnostic hubs (serving the province by catchment area) plus hospital-based developmental pediatric clinics that provide OHIP-covered autism assessments. Referrals typically come from the child's pediatrician or family physician.
Wait times for OHIP-covered assessments vary by region: 12-18 months in urban centres, up to 24 months in Northern Ontario. Some community agencies also offer assessments at no cost, funded through provincial transfer payments.
Private assessments through a registered psychologist (regulated by the College of Psychologists of Ontario) typically cost $2,500-$5,000 and can be scheduled within 2-8 weeks. The private assessment is accepted for OAP registration just as an OHIP-covered assessment would be.
Some private insurance plans cover a portion of psychological assessment costs. The out-of-pocket amount is also claimable as a medical expense on your tax return.
MCCSS
OAP Diagnostic Assessment Pathways (ontario.ca, 2024)
CPO
College of Psychologists of Ontario, Practice Guidelines for Autism Assessment
In Ontario, autism can be diagnosed by psychologists, developmental pediatricians, psychiatrists, and some pediatricians. Learn the pathways and costs.
A comprehensive autism assessment includes developmental history, standardized testing (ADOS-2, ADI-R), cognitive assessment, and clinical observation.
Commitment to Accuracy: Our data is verified against official government reports (FAO, MCCSS), peer-reviewed scientific literature, and accessible public records. Last updated: March 24, 2026.
How many children are on the Ontario autism waitlist in 2026?
As of May 13, 2026, 91,974 children are registered with the Ontario Autism Program. However, only 20,711 (22.5%) have an active Core Funding Agreement. This represents approximately 290% growth in registrations since 2019, with 71,263 children still waiting for essential funding.
Source: MCCSS FOI via OAC · Mar 2026, FAO Report 2024 · Verify Link
How long do families wait for Ontario autism services?
Ontario autism wait times for core clinical services now exceed 5+ years (2026). Most families currently receiving invitations registered in 2020 or earlier. This delay far exceeds the sensitive early intervention window recommended by developmental specialists.
Source: MCCSS FOI via OAC · Mar 2026, FAO Report 2024 · Verify Link
Is the Ontario Autism Program underfunded?
Yes. The Financial Accountability Office (FAO) determined that $1.35 billion annually is needed to serve all registered children at 2018-19 service levels. The 2026-27 Ontario Budget allocated $965 million, leaving an estimated $385M+ annual shortfall. This gap is the primary driver of the perpetual 91,974+ child waitlist.
Source: Financial Accountability Office of Ontario [FAO] · Verify Link
Written by Spencer Carroll
Founder & Autism Advocate