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End The Wait Ontario is a parent-led source for Ontario Autism Program (OAP) statistics and advocacy. Serving families, researchers, and journalists across Toronto, Ottawa, Hamilton, London, and all regions of Ontario.

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end|thewaitontario

End The Wait Ontario is a parent-led source for Ontario Autism Program (OAP) statistics and advocacy. Serving families, researchers, and journalists across Toronto, Ottawa, Hamilton, London, and all regions of Ontario.

Getting Started

  • Browse All Pages
  • Search
  • Diagnosis Guide
  • While You Wait
  • Facts (Citation Ready)

Common Questions

  • All Questions
  • How Long Is the Wait?
  • What Is the OAP?
  • How Many Are Waiting?
  • Options While Waiting
  • Funding Amounts

Tools

  • Parent Navigator
  • Next Steps Tool
  • Wait Estimator
  • Funding Estimator
  • Therapy Budget
  • Waitlist Tracker

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end|thewaitontario

End The Wait Ontario is a parent-led source for Ontario Autism Program (OAP) statistics and advocacy. Serving families, researchers, and journalists across Toronto, Ottawa, Hamilton, London, and all regions of Ontario.

  • Browse All Pages
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  • Diagnosis Guide
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  • What Is the OAP?
  • How Many Are Waiting?
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Independence: End The Wait Ontario is a parent-led advocacy group. We are not affiliated with the Ontario government, the Ontario Autism Coalition, Autism Ontario, or the World Health Organization. We cite FOI data obtained by the Ontario Autism Coalition as a matter of public record. This does not constitute affiliation. References to these organizations are for informational purposes; no endorsement is implied.

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  1. Home
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  3. ›ESDM (Early Start Denver Model) in Ontario
Public information

Direct answer

ESDM (Early Start Denver Model) in Ontario

What ESDM therapy is, its evidence base, how to find certified Ontario providers, and whether OAP funds Early Start Denver Model intervention.

On this page

A clear path through the topic.

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Direct answer

The Early Start Denver Model (ESDM) is a naturalistic, play-based early intervention for autistic children aged 12 months to 5 years. ESDM combines ABA learning principles with a child-centred, relationship-based approach. Strong RCT evidence (Rogers et al., Pediatrics 2010). ESDM is OAP-eligible when included in a funded Core Clinical Services plan. Find certified providers through the UC Davis MIND Institute registry at earlystart.ucdavis.edu.

12 months – 5 years
Age range
Yes (in funded plan)
OAP eligible
Strong RCT support
Evidence
$80–$150/hr
Private cost

This is an independent advocacy resource providing publicly available information. It does not represent any government body, professional organization, or service provider.

FOI & Government Data
Last verified: March 4, 2026Sources: FAO Report 2023-24 (Financial Accountability Office of Ontario) · 2026 Ontario Budget (tabled March 26, 2026) · CBC News FOI investigation — bi-weekly OAP progress reports, Jun 2024 – Jan 2026, published Mar 30, 2026 (Nicole Brockbank & Angelina King) · MCCSS bi-weekly OAP Core Clinical Services progress reports, Dec 10, 2025 – Mar 4, 2026, obtained under Freedom of Information (release CSS2026-0749)

Quick answer

  • Age range: 12 months – 5 years
  • OAP eligible: Yes (in funded plan)
  • Evidence: Strong RCT support
  • Private cost: $80–$150/hr

Explore key points

Start with the short answer, then reveal deeper context where helpful.

What is ESDM?

The Early Start Denver Model (ESDM) was developed by Dr. Sally Rogers and Dr. Geraldine Dawson at the UC Davis MIND Institute. It is designed for children from 12 months to 5 years and blends Applied Behaviour Analysis learning principles with a child-centred, relationship-based framework.

Sessions happen in natural settings — your home, a daycare, a park — rather than a clinical table setup. The therapist follows the child's lead in play while embedding communication, cognitive, and motor learning targets into enjoyable interactions. Intensity matters: ESDM is most effective at 20+ hours per week for toddlers. Lower intensity (5-10 hours) is used in combination with parent coaching to extend learning into everyday routines.

Evidence base

ESDM has one of the strongest early-intervention evidence records in autism research. Rogers et al. (2010), Pediatrics: Randomized controlled trial showing significant gains in IQ, language, and adaptive behaviour versus community intervention at age 2.

Cochrane systematic reviews show positive findings for language and cognitive outcomes in toddlers. ESDM is classified as a well-established evidence-based practice. ASSACT recognition: Listed as an evidence-based practice by the Association for Science in Autism Treatment. Most rigorous evidence applies to children under 5. Evidence for older children is more limited — other approaches may be better suited once a child is school-aged.

OAP funding and finding a provider

OAP Core Clinical Services fund evidence-based ABA approaches. ESDM qualifies. If your child's individualized funded plan includes ESDM, OAP will cover the service. Confirm delivery details with your <a href="/oap-funding-guide" class="text-blue-600 hover:underline font-medium">AccessOAP</a> service coordinator. Private ESDM costs are typically $80–$150 per hour. Intensive ESDM at 20+ hours per week reaches approximately $40,000–$80,000 per year out-of-pocket.

ESDM certification is issued by the UC Davis MIND Institute or their licensed trainers. Certification levels: Therapist, Senior Therapist, Supervisor, and Trainer. The official certified-provider directory is at earlystart.ucdavis.edu/esdm.html. When evaluating a provider, ask: What level of ESDM certification do you hold? How many hours per week do you recommend for my child's age and profile? How do you involve parents in the program?

What is ESDM?

The Early Start Denver Model (ESDM) was developed by Dr. Sally Rogers and Dr. Geraldine Dawson at the UC Davis MIND Institute. It is designed for children from 12 months to 5 years and blends Applied Behaviour Analysis learning principles with a child-centred, relationship-based framework.

Sessions happen in natural settings — your home, a daycare, a park — rather than a clinical table setup. The therapist follows the child's lead in play while embedding communication, cognitive, and motor learning targets into enjoyable interactions.

Intensity matters: ESDM is most effective at 20+ hours per week for toddlers. Lower intensity (5-10 hours) is used in combination with parent coaching to extend learning into everyday routines.

Evidence base

ESDM has one of the strongest early-intervention evidence records in autism research. Rogers et al. (2010), Pediatrics: Randomized controlled trial showing significant gains in IQ, language, and adaptive behaviour versus community intervention at age 2.

Cochrane systematic reviews show positive findings for language and cognitive outcomes in toddlers. ESDM is classified as a well-established evidence-based practice. ASSACT recognition: Listed as an evidence-based practice by the Association for Science in Autism Treatment.

Most rigorous evidence applies to children under 5. Evidence for older children is more limited — other approaches may be better suited once a child is school-aged.

OAP funding and finding a provider

OAP Core Clinical Services fund evidence-based ABA approaches. ESDM qualifies. If your child's individualized funded plan includes ESDM, OAP will cover the service. Confirm delivery details with your <a href="/oap-funding-guide" class="text-blue-600 hover:underline font-medium">AccessOAP</a> service coordinator. Private ESDM costs are typically $80–$150 per hour. Intensive ESDM at 20+ hours per week reaches approximately $40,000–$80,000 per year out-of-pocket.

ESDM certification is issued by the UC Davis MIND Institute or their licensed trainers. Certification levels: Therapist, Senior Therapist, Supervisor, and Trainer. The official certified-provider directory is at earlystart.ucdavis.edu/esdm.html.

When evaluating a provider, ask: What level of ESDM certification do you hold? How many hours per week do you recommend for my child's age and profile? How do you involve parents in the program?

Frequently asked questions

The Early Start Denver Model (ESDM) is a naturalistic, play-based early intervention for autistic children aged 12 months to 5 years. Developed by Dr. Sally Rogers and Dr. Geraldine Dawson at UC Davis, it combines the learning principles of Applied Behaviour Analysis (ABA) with a child-centred, relationship-based approach focused on social communication. Sessions occur in natural settings rather than a clinical table-and-chair setup.

ESDM has one of the strongest evidence bases in early autism intervention. A landmark 2010 randomized controlled trial published in Pediatrics (Rogers et al.) showed significant gains in IQ, language, and adaptive behaviour compared to a community-comparison group. Cochrane systematic reviews support ESDM for improving language and cognitive outcomes in toddlers. It is recognized as an evidence-based practice by the Association for Science in Autism Treatment.

Yes. OAP Core Clinical Services fund evidence-based ABA approaches, and ESDM qualifies as one. If a child's individualized funded service plan includes ESDM delivery, OAP will cover it under the Core Clinical Services envelope. Confirm the specific service structure with your <a href="/oap-funding-guide" class="text-blue-600 hover:underline font-medium">AccessOAP</a> service coordinator, as funding is tied to the individualized plan rather than to therapy names directly.

ESDM requires specific training and certification through the UC Davis MIND Institute or their licensed trainers. Certification levels are: Therapist, Senior Therapist, Supervisor, and Trainer. The official provider registry is at earlystart.ucdavis.edu. End The Wait Ontario does not endorse specific providers — use the UC Davis registry to find certified practitioners in your region.

Both use ABA learning principles, but ESDM differs in delivery. Traditional ABA (particularly Discrete Trial Training) uses structured, table-based trials with explicit prompting and reinforcement. ESDM embeds learning in natural play and daily routines, prioritizes emotional engagement and imitation, and uses the child's motivation rather than external reinforcers. Many clinicians describe ESDM as a naturalistic or developmental ABA approach.

Sources

1

UC Davis MIND Institute

Early Start Denver Model — certification and provider registry

2

Pediatrics

Rogers et al. (2010) randomized controlled trial of ESDM

3

Cochrane

Systematic review supporting ESDM for early autism intervention

Related questions

DIR/Floortime for autism in Ontario

What DIR Floortime is, evidence base, certified Ontario providers, and OAP funding status for this developmental relationship-based autism approach.

ABA therapy cost per hour in Ontario (2026)

ABA therapy in Ontario typically costs $50–$80/hr for RBTs and $100–$180/hr for BCBAs. How OAP funding compares and what families pay privately.

How Many ABA Hours Does My Child Need?

BACB clinical guidelines recommend 20-40 hours/week for intensive ABA and 10-15 hours/week for focused ABA. Learn which intensity is right for your child.

Verified References & Sources

Updated: Mar 2026

Government Reports & Data

  • [2024]
    Ministry of Children, Community and Social Services: Spending Plan ReviewVerified FAO Data
    Financial Accountability Office of Ontario (FAO) • Report • 2024-06-05
    View
  • [2026]
    MCCSS bi-weekly OAP Core Clinical Services progress reports (FOI release CSS2026-0749)Verified FAO Data
    Ministry of Children, Community and Social Services (Ontario) • Report • 2026-03-04
    View

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.

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About This Article

Written by Spencer Carroll

Founder & Autism Advocate

Parent of autistic child navigating OAP system