Company lists · Data refreshed September 2026
Top 25 Early intervention services worldwide
RevenueBase identified 3,260 early intervention services worldwide as of September 2026 and tracks 41,851 professional contacts across them, including 10,156 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers early intervention services worldwide, 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. Country and city lists for early intervention services follow the table.
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.
The 25 largest early intervention services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 981 contacts → | ||||
Indirect evidence “Center for Social Dynamics (CSD) is an organization providing services to those with developmental delays, including autism, in the state of California, Oregon, Washington…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 788 contacts → | ||||
Indirect evidence “ChildServe knows kids and we know specialty healthcare.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 646 contacts → | ||||
Indirect evidence “Sunny Days, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 566 contacts → | ||||
Indirect evidence “Achieve Beyond provides pediatric therapy and educational services to children, students and families throughout the United States including Virginia (VA)/ Maryland (MD)/ DC area…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 527 contacts → | ||||
Indirect evidence “Helping children thrive, one milestone at a time.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 456 contacts → | ||||
Indirect evidence “Pediatrics Plus is a pediatric healthcare provider specializing in occupational, speech and physical therapy as well as applied behavior analysis.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 447 contacts → | ||||
Indirect evidence “Verbal Beginnings is a family-focused network of professionals providing exceptional comprehensive autism services to families across the MD, PA, DE, DC and NoVA region.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 352 contacts → | ||||
Indirect evidence “Locations in Madison, Milwaukee, Green Bay, and Eau Claire!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 331 contacts → | ||||
Indirect evidence “At Family of Kidz, we bring together highly qualified teams of professionals that work diligently to help individuals with special needs, from birth through adulthood.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 323 contacts → | ||||
Strong evidence “Early Start Australia is a national organisation committed to delivering evidence-based best practice early intervention and therapy services to children, young adults and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 276 contacts → | ||||
Indirect evidence “New York Therapy is a full-service resource for families who face unique challenges and require additional assistance with their child’s development.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | 252 contacts → | ||||
Indirect evidence “All About Kids was founded by Cathy Grossfeld in 1988, later joined by her husband Michael who are both New York State licensed Speech-Language Pathologists and have over 60 years…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 205 contacts → | ||||
Indirect evidence “Kindering embraces children of diverse abilities and their families by providing the finest education and therapies to nurture hope, courage, and the skills to soar.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 199 contacts → | ||||
Indirect evidence “Ireland Home Based Services has worked in the counties of Southern Indiana providing quality home-based services for over 25 years.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 177 contacts → | ||||
Strong evidence “Thom Child and Family Services works with over infants, toddlers, and their families throughout Massachusetts – providing critical Early Intervention and related services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 172 contacts → | ||||
Indirect evidence “Meeting Street is where children of all abilities - birth to age 22 - receive individualized services from highly trained and dedicated educators, therapists, and allied…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 168 contacts → | ||||
Indirect evidence “SLEA Therapies provides comprehensive evaluations and individualized treatments in the following areas for adults and children with special needs and disabilities: • Speech and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 163 contacts → | ||||
Indirect evidence “Blue Bird Day is an intensive pediatric therapy program designed to foster socialization, sensory regulation and academic learning in children ages 2-7 in therapeutic rotations…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 159 contacts → | ||||
Strong evidence “AEIOU Foundation is a leading provider of evidence-based early intervention for preschool-aged children with autism.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 156 contacts → | ||||
Indirect evidence “Advancing abilities for people with special needs - since 1951 Abilis (ABLE-ISS), is a 501(c)3 nonprofit organization that provides services and supports for over 800 individuals…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 156 contacts → | ||||
Indirect evidence “Our Mission: ABLE Kids is dedicated to helping children with autism Achieve Beyond Life's Expectations!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 150 contacts → | ||||
Indirect evidence “The skills and knowledge your child will learn today play a major role in determining who they'll be tomorrow.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 142 contacts → | ||||
Indirect evidence “We offer therapy for children from birth to age 21 with a wide range of needs.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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 3,260 early intervention services worldwide
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Early intervention services worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for early intervention services are linked below.
- What qualifies
- Companies worldwide 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.
- 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, 10,156 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.
Early intervention services by location
8 lists · largest firstEvery Early intervention services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Early intervention services based in the United States1,641
- Early intervention services based in Australia205
- Early intervention services based in Canada102
- Early intervention services based in the Netherlands29
- Early intervention services based in Singapore28
- Early intervention services based in the United Kingdom28
Cities
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 worldwide?
RevenueBase identified 3,260 early intervention services worldwide 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?
Center For Social Dynamics, headquartered in Alameda, tops this list with the largest team on record.
Which country has the most early intervention services?
The United States leads with 1,641 companies, followed by Australia (205) and Canada (102). Every early intervention services list by country and city is linked on this page.
Which city has the most early intervention services?
New York leads with 47 headquartered companies, followed by Miami (28) and Chicago (26).
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 10,156 verified decision-maker contacts tracked across these 3,260 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.