Company lists · Data refreshed September 2026

Top 25 Early intervention services based in Canada

Name: Early intervention services based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 102 companies tracked

RevenueBase identified 102 early intervention services headquartered in Canada as of September 2026 and tracks 1,557 professional contacts across them, including 691 with verified work emails. Calgary is the largest hub.

This list covers early intervention services headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

102Companies

1,557Contacts tracked

691Verified emails

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The 25 largest early intervention services based in Canada

Ranked by team size

Top 25 of 102 early intervention services based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to early intervention services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kidsability Centre For Child Development	Indirect evidence	Waterloo, ON, CanadaHQ checked Sep 19, 2026	201-500	273 contacts →
	Indirect evidence “At KidsAbility, we support over children and youth to reach their communication, social, physical and behavioural goals each year.” Source: RevenueBase Database · checked Sep 19, 2026
2	TVCC	Indirect evidence	London, ON, CanadaHQ checked Sep 19, 2026	201-500	199 contacts →
	Indirect evidence “Since 1949, TVCC (formerly Thames Valley Children's Centre) has been working with children and youth with physical disabilities, communication disorders, developmental delays and…” Source: RevenueBase Database · checked Sep 19, 2026
3	Children's Treatment Network CTN	Indirect evidence	Richmond Hill, ON, CanadaHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “CTN supports over kids and youth with disabilities and developmental needs.” Source: RevenueBase Database · checked Sep 19, 2026
4	Niagara Children's Centre	Indirect evidence	St. Catharines, ON, CanadaHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Niagara Children’s Centre is recognized throughout the Niagara Region as the provider of rehabilitation and support services to children and youth with physical, developmental and…” Source: RevenueBase Database · checked Sep 19, 2026
5	ONE Kids Place Children's Treatment Centre	Indirect evidence	North Bay, ON, CanadaHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “One Kids Place offers a range of services to help children, youth and their families with physical, developmental and communication delays and disabilities.” Source: RevenueBase Database · checked Sep 19, 2026
6	Yaldei Developmental Center	Strong evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	11-50	61 contacts →
	Strong evidence “At The Donald Berman YALDEI Developmental Center, we provide Early Intervention treatment and specialized therapies to children with developmental needs from birth to 18 years.” Source: RevenueBase Database · checked Sep 19, 2026
7	Five Counties Children's Centre	Indirect evidence	Peterborough, ON, CanadaHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Five Counties Children’s Centre is an outpatient treatment centre for children from birth to 19 years of age with physical, developmental and communication needs and their…” Source: RevenueBase Database · checked Sep 19, 2026
8	Butterfly Paediatric Therapy	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Butterfly Paediatric Therapy offers Physiotherapy, Occupational Therapy and Speech Language Pathology to children aged 0-18 years in a safe, engaging and fun environment!” Source: RevenueBase Database · checked Sep 19, 2026
9	ABC Pediatric Therapies	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	1-10	22 contacts →
	Indirect evidence “ABC Pediatric Threrapies - Where Kids Reach Their Full Potential!” Source: RevenueBase Database · checked Sep 19, 2026
10	TWO CAN Talk	Indirect evidence	Maple, ON, CanadaHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “At Two Can Talk, We’re More Than a Clinic – We’re Your Partner in Speech Therapy, Occupational Therapy, and Group Services!” Source: RevenueBase Database · checked Sep 19, 2026
11	Comox Valley Child Development Association	Indirect evidence	Courtenay, BC, CanadaHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “The Comox Valley Child Development Association (CVCDA) is a non-profit society that has served children and youth with special needs since 1974.” Source: RevenueBase Database · checked Sep 19, 2026
12	Hello Speech	Indirect evidence	Toronto, CanadaHQ checked Sep 19, 2026	1-10	20 contacts →
	Indirect evidence “For over a decade, Mary Plain and Ronit Rosenblum have collaborated in helping children in Toronto and the Greater Toronto Area in successfully working toward their goals.” Source: RevenueBase Database · checked Sep 19, 2026
13	Osns Child & Youth Development Centre	Indirect evidence	Penticton, BC, CanadaHQ checked Sep 19, 2026	51-200	18 contacts →
	Indirect evidence “The OSNS has delivered evidence-based support services to children and families for the past 40 years.” Source: RevenueBase Database · checked Sep 19, 2026
14	The Hullabaloo	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “The Hullabaloo delivers in-centre and community-based therapy services including ABA, SLP, and OT to children with developmental disabilities.” Source: RevenueBase Database · checked Sep 19, 2026
15	Step By Step Early Intervention Society	Strong evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	16 contacts →
	Strong evidence “Step by Step Early Intervention Society is a charitable organization providing exceptional early childhood education, therapeutic and family supports for developmentally delayed…” Source: RevenueBase Database · checked Sep 19, 2026
16	Kids Developmental Services LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	16 contacts →
	Indirect evidence “Kids Developmental Services teams (teachers, assistants, and therapists) work with your child in a community preschool or child care centre of your choice.” Source: RevenueBase Database · checked Sep 19, 2026
17	Kin-Dir Education Foundation	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
18	Connections Early Years Family Centre	Strong evidence	Windsor, ON, CanadaHQ checked Sep 19, 2026	11-50	15 contacts →
	Strong evidence “Connections Early Years Family Centre is a progressive, family-centred organization providing integrated support, learning and early identification / intervention services to…” Source: RevenueBase Database · checked Sep 19, 2026
19	Affiliated Services For Children & Youth Ascy	Indirect evidence	Hamilton, ON, CanadaHQ checked Sep 19, 2026	51-200	14 contacts →
	Indirect evidence “Founded in 1994, ASCY is a non-profit agency funded through The City of Hamilton and The Ministry of Children, Community and Social Services.” Source: RevenueBase Database · checked Sep 19, 2026
20	Nsecdis	Indirect evidence	Halifax, NS, CanadaHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
21	Bright Spot Therapy Services LTD	Indirect evidence	Timmins, ON, CanadaHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “Why Bright Spot?” Source: RevenueBase Database · checked Sep 19, 2026
22	A To Z Therapy Clinic	Indirect evidence	Laval, QC, CanadaHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “At A to Z Therapy Clinic we work with children from the ages of 18 months to 18 years of age.” Source: RevenueBase Database · checked Sep 19, 2026
23	LES Zailés	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Les Zailés offre des services d'orthophonie pour les tout-petits, les plus grands et leur famille dans un esprit collaboratif et ludique, au rythme de chacun.” Source: RevenueBase Database · checked Sep 19, 2026
24	From Play To Words	Indirect evidence	Spruce Grove, AB, CanadaHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Shuswap Childrens Association	Indirect evidence	Salmon Arm, BC, CanadaHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “We are a non-profit, child development center that provides a variety of services for children, youth, and families in our community.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: early intervention services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names early intervention services.
Partial evidence: Its own public description names part of early intervention services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name early intervention services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 102 early intervention services based in Canada

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Early intervention services based in Canada at a glance

As of Sep 19, 2026

44.4%Verified-email coverage

15.3Average contacts per company

11-50Median size (employees)

8.8%Largest-city concentration · Calgary

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 102 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among early intervention services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “early intervention services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names early intervention services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among early intervention services, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 691 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names early intervention services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many early intervention services are there based in Canada?

RevenueBase identified 102 early intervention services headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Kidsability Centre For Child Development, headquartered in Waterloo, tops this list with the largest team on record.

Which city has the most early intervention services?

Calgary leads with 9 headquartered companies, followed by Montreal (8) and Toronto (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 691 verified decision-maker contacts tracked across these 102 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.