72/100RP Score
Ranked #1 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.8★ from 37 Google reviews.
Best ABA Therapy Providers in Markham, IL (2026)
196 ABA therapy providers ranked by RP ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Markham: Autism Care Therapy - ABA Therapy, RP Score 72/100; 3.8★ from 37 Google reviews; open 7 days a week.
- 49
Most-reviewed: Cortica Westchester, 92 Google reviews at 4.8★, the most of 196 ranked; ranked #49.
Rankings can't be bought. Psychologists can't pay to change their rank or score. How we rank
196 Markham ABA therapy providers are ranked here by RP Score, from eight published factors. 60 open Saturdays and 20 open Sundays, based on posted hours. The median Google rating is 4.8★ across 196 rated practices.
Top 10 ABA therapy providers in Markham at a glance
Ranked by the RP Score from public listing data, not by treatment outcomes; Sponsored placements are shown separately and never change rank.
| Rank | Business | RP Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Autism Care Therapy - ABA Therapy | 72 | 3.8★ (37) | Oak Lawn, 9 mi away | Sat · Sun · Evenings | Overall |
| 2 | Autism Care Therapy - ABA Therapy | 72 | 3.4★ (17) | Oak Lawn, 9 mi away | Sat · Sun · Evenings | — |
| 3 | Westside Children's Therapy | 71 | 4.9★ (54) | Tinley Park, 5 mi away | Evenings | — |
| 4 | Howard Intervention Center | 71 | 3.8★ (10) | Matteson, 6 mi away | Sat · Evenings | — |
| 5 | Westside Children's Therapy | 70 | 4.9★ (89) | Frankfort, 8 mi away | Evenings | — |
| 6 | Autism Care Therapy - ABA Therapy | 70 | 3.6★ (32) | Chicago, 14 mi away | Sat · Sun · Evenings | — |
| 7 | The Place for Children with Autism - Oak Lawn | 70 | 3.9★ (11) | Oak Lawn, 9 mi away | Sat · Evenings | — |
| 8 | Ambitions ABA | 70 | 4.9★ (35) | Lincolnwood, 28 mi away | Sat · Sun · Evenings | — |
| 9 | Solid Ground Behavioral Services | 70 | 4.7★ (15) | Blue Island, 4 mi away | Evenings | — |
| 10 | Westside Children's Therapy | 69 | 4.9★ (39) | Orland Park, 9 mi away | Evenings | — |
The 196 best ABA therapy providers in Markham, ranked
Ordered by RP Score, a 0–100 score from eight published factors. Paid placement never changes the order.
Ranked by the RP Score from public listing data, not by treatment outcomes; Sponsored placements are shown separately and never change rank.
Scores below: based on 7 of 8 factors; recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Oak Lawn, 9 mi away
72/100RP ScoreRanked #2 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.4★ from 17 Google reviews.
Based in Tinley Park, 5 mi away
71/100RP ScoreRanked #3 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.9★ from 54 Google reviews.
Based in Matteson, 6 mi away
71/100RP ScoreRanked #4 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.8★ from 10 Google reviews.
Based in Frankfort, 8 mi away
70/100RP ScoreRanked #5 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.9★ from 89 Google reviews.
Based in Chicago, 14 mi away
70/100RP ScoreRanked #6 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.6★ from 32 Google reviews.
Based in Oak Lawn, 9 mi away
70/100RP ScoreRanked #7 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.9★ from 11 Google reviews.
Based in Lincolnwood, 28 mi away
70/100RP ScoreRanked #8 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.9★ from 35 Google reviews.
Based in Blue Island, 4 mi away
70/100RP ScoreRanked #9 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.7★ from 15 Google reviews.
Based in Orland Park, 9 mi away
69/100RP ScoreRanked #10 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.9★ from 39 Google reviews.
#11 Ours ABA
Based in Munster, 10 mi away
69/100RP ScoreRanked #11 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 3.7★ from 9 Google reviews.
Based in Orland Park, 8 mi away
69/100RP ScoreRanked #12 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 5.0★ from 27 Google reviews.
Based in Orland Park, 9 mi away
69/100RP ScoreRanked #13 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.8★ from 24 Google reviews.
Based in Crestwood, 6 mi away
69/100RP ScoreRanked #14 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.5★ from 8 Google reviews.
Based in Oak Lawn, 8 mi away
69/100RP ScoreRanked #15 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.8★ from 18 Google reviews.
Based in Chicago, 7 mi away
68/100RP ScoreRanked #16 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.9★ from 8 Google reviews.
Based in Frankfort, 11 mi away
68/100RP ScoreRanked #17 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 5.0★ from 31 Google reviews.
Based in Mokena, 8 mi away
68/100RP ScoreRanked #18 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 5.0★ from 11 Google reviews.
Based in Tinley Park, 7 mi away
68/100RP ScoreRanked #19 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.2★ from 17 Google reviews.
Based in Forest Park, 21 mi away
68/100RP ScoreRanked #20 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.0★ from 8 Google reviews.
Based in Alsip, 7 mi away
68/100RP ScoreRanked #21 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 5.0★ from 6 Google reviews.
Based in Crest Hill, 22 mi away
68/100RP ScoreRanked #22 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.1★ from 26 Google reviews.
Based in Mokena, 9 mi away
68/100RP ScoreRanked #23 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.7★ from 9 Google reviews.
Based in Tinley Park, 7 mi away
68/100RP ScoreRanked #24 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.3★ from 6 Google reviews.
Based in Lombard, 25 mi away
67/100RP ScoreRanked #25 because of specialty focus and its Google rating: listed on Google as “Applied behavior analysis therapist”, 4.6★ from 20 Google reviews.
ABA therapy providers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in RP Score order; each links to its profile. We publish the top 50 of 196 ranked ABA therapy providers here; the rest are on their profiles.
Also serving Markham
20 more ABA therapy providers within 40 mi that we can't rank yet: too few reviews, or a specialty we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Abacus Therapy Center | 5.0★ (2) | 8 mi |
| Apex Pediatric Therapy Services - ABA Therapy for Autism | 5.0★ (2) | 26 mi |
| Behavioral Perspective (BPI) | 5.0★ (2) | 34 mi |
| Bertling ABA | 5.0★ (2) | 16 mi |
| Beyond Limits Behavioral Services | 5.0★ (2) | 26 mi |
| BGF Children's Therapy | 3.5★ (2) | 28 mi |
| Brilliant Minds Behavioral Health and ABA Services | 5.0★ (2) | 13 mi |
| Brown Bear - ABA Therapy for Autism | 5.0★ (2) | 25 mi |
| Building Blocks of Life ABA Therapy | 5.0★ (2) | 10 mi |
| BY YOUR SIDE Autism Therapy Services | 5.0★ (2) | 22 mi |
| Center for Autism & Related Disorders | 5.0★ (2) | 28 mi |
| CST Academy - Pediatric Therapy & Autism Care | 5.0★ (2) | 28 mi |
| Early Ascent ABA | 5.0★ (2) | 29 mi |
| Funderburg Consulting Services | In Markham | |
| homebasedbehavioralsolutions | 2.5★ (2) | 20 mi |
| Milestone Therapy | 3.0★ (2) | 20 mi |
| Pyramid Therapeutic Preschool | 5.0★ (2) | 24 mi |
| Rise Up For Autism | ABA Therapy | 5.0★ (2) | 26 mi |
| Starlight ABA Services, PLLC. | 5.0★ (2) | 26 mi |
| The Place for Children with Autism- Headquarters | 5.0★ (2) | 28 mi |
How we ranked Markham ABA therapy providers
We scored 196 Markham ABA therapy providers on eight factors, weighted as shown. A practice is ranked when its specialty is confirmed and it has 3 or more Google reviews or a claimed profile. A practice with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Markham data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 5% | Number of Google reviews, compared with the most-reviewed practice on the list | Measured |
| Recency | 5% | Share of Google reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, and round-the-clock or same-day availability | Measured |
| Specialty focus | 25% | How clearly the practice does this specialty (its Google category and name) | Measured |
| Proximity | 15% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The practice has claimed its Ranked Psychologists profile (free or paid earn the same) | Measured |
| Partnered | 5% | The practice links to Ranked Psychologists from its own website with our badge, checked periodically | Measured |
How to choose an ABA therapy provider
- Check the license with the state or provincial board that issued it; most boards publish a free online lookup.
- Make sure ABA therapy is a regular part of their work, and ask what approach they use and why.
- Ask how many hours a week they recommend and how they set goals with the family.
- Ask how often a BCBA observes sessions and meets with parents.
- Ask about fees, insurance and the cancellation policy before the first session. In the US, if you are uninsured or paying yourself, you can ask for a good faith estimate of expected charges.
- Check practical fit: in-person or online sessions, evening times, and how soon they have an opening.
- After a few sessions, ask yourself whether you feel heard. Changing to a different provider is common and fine.
Questions to ask an ABA therapy provider
- Are you accepting new clients, and how soon could I start?
- Which license do you hold, and in which state or province?
- How much of your work is ABA therapy?
- Is there a waitlist, and do you accept my insurance?
- What do you charge per session, and do you take my insurance or provide a superbill?
- Do you offer online sessions?
- What is your cancellation policy?
- What do you keep confidential, and when would you have to share information?
Terms explained
- PhD / PsyD
- Doctoral degrees in psychology. A PhD usually has a stronger research focus, a PsyD a stronger clinical focus; both can lead to a psychologist license.
- Licensed psychologist
- A person licensed by a state or provincial psychology board to practice psychology. The title is protected by law.
- Psychological associate
- In some states and provinces, a master’s-level practitioner licensed or registered by the psychology board, often with supervision requirements.
- LPC / LMHC / LCPC
- US licenses for professional or mental health counselors (the name differs by state). They provide counseling and therapy.
- LCSW
- Licensed clinical social worker: a master’s-level social worker licensed to provide therapy.
- LMFT
- Licensed marriage and family therapist: licensed to treat individuals, couples and families with a focus on relationships.
- RP / RCC
- Registered psychotherapist (Ontario) and registered clinical counsellor (British Columbia): Canadian titles for licensed therapy providers.
- PSYPACT
- An interstate agreement that lets psychologists licensed in a member state provide telepsychology to clients in other member states once they hold the required authorization.
- Telehealth
- Sessions held by secure video or phone instead of in person. The provider generally needs to be licensed where the client is located.
- CBT
- Cognitive behavioral therapy: a structured talk therapy that works on the links between thoughts, feelings and behavior.
- DBT
- Dialectical behavior therapy: a form of CBT that teaches skills for managing intense emotions and relationships.
- ERP
- Exposure and response prevention: a form of CBT used for OCD.
ABA therapy providers in Markham: frequently asked questions
Who is the best ABA therapy provider in Markham?
By RP Score, the highest-ranked ABA therapy provider in Markham, IL is Autism Care Therapy - ABA Therapy with an RP Score of 72/100. It has 3.8★ from 37 Google reviews. It is open 7 days a week. Autism Care Therapy - ABA Therapy (#2) and Westside Children's Therapy (#3) follow. We ranked 196 ABA therapy providers on eight factors, last updated November 9, 2026.
How many ABA therapy providers are there in Markham?
RankedPsychologists ranks 196 ABA therapy providers serving Markham, IL. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
What should I do if I need help right now?
In crisis or thinking about suicide? Call or text 988 (US and Canada), any time. In an emergency, call 911. This site cannot help in an emergency.
Which ABA therapy providers in Markham work on weekends?
60 of 196 ranked ABA therapy providers post Saturday hours and 20 post Sunday hours. The highest-ranked open Saturdays are Autism Care Therapy - ABA Therapy (#1), Autism Care Therapy - ABA Therapy (#2) and Howard Intervention Center (#4). Posted hours are office hours; many practices also offer evening or online sessions by appointment.
What Google rating do Markham ABA therapy providers have?
The median Google rating among 196 rated ABA therapy providers in Markham is 4.8★, with a median of 12 reviews. Cortica Westchester has the most, 92 reviews, and ranks #49. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does RankedPsychologists rank ABA therapy providers?
Each ABA therapy provider gets a 0–100 RP Score from eight published factors, led by reputation (25%), specialty focus (25%), proximity (15%) and availability (10%). A practice with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only practices with a confirmed specialty and 3 or more reviews, or a claimed profile, are ranked.
Do ABA therapy providers outside Markham count in this ranking?
Yes, if they are within 40 mi of the Markham city center, our service radius for ABA therapy providers. Each listing shows where the practice is based and how far away it is. Proximity is 15% of the RP Score, so a nearby practice gets a small edge.
Can ABA therapy providers pay to rank higher on RankedPsychologists?
No. The RP Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured practices may appear above the list, labelled Sponsored and showing their honest rank.
How are aBA therapy providers in Markham ranked?
Each practice gets an RP Score from 0 to 100 from 8 published factors, including its Google rating, how clearly it focuses on ABA therapy and how close it is. Sponsored placements are shown separately and never change rank. The score does not measure treatment outcomes.
Who provides ABA therapy?
ABA programs are designed and supervised by board certified behavior analysts (BCBA). Day-to-day sessions are often delivered by registered behavior technicians (RBT) working under that supervision. Many US health plans cover ABA for autism; the rules differ by state and plan, so ask the provider and your insurer.
Can I see an ABA therapy provider online?
Often, yes. Licensing generally follows where you are during the session, so the provider needs to be licensed or authorized there. In the US, psychologists in PSYPACT member states can offer telepsychology to clients in other member states; counselors and social workers have their own rules. In Canada, ask whether the provider is registered in your province.
What if I need help right now?
Do not wait for a consultation. Call or text 988 (US and Canada) if you are in crisis or thinking about suicide, at any time. In an emergency, call 911.
Update log for Markham
- November 2026: RP Scores recalculated for 196 ABA therapy providers serving Markham.
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