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Best Psychologists in St. Thomas, ON (2026)

26 psychologists ranked by RP ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in St. Thomas: EDify Elgin (Saint Thomas Psychoeducational Assessments), RP Score 68/100; 3.0★ from 3 Google reviews; open evenings.

  2. 2

    Most-reviewed: Dr. Arthur, 41 Google reviews at 3.5★, the most of 26 ranked; ranked #2.

Rankings can't be bought. Psychologists can't pay to change their rank or score. How we rank

26 St. Thomas psychologists are ranked here by RP Score, from eight published factors. 6 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.8★ across 26 rated practices.

Most of this list also appears on the Psychologists in London ranking. See Psychologists in London

Top 10 psychologists in St. Thomas 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.

Top 10 psychologists in St. Thomas at a glance
RankBusinessRP ScoreGoogle ratingBased inHoursBest for
1EDify Elgin (Saint Thomas Psychoeducational Assessments)683.0★ (3)St. ThomasEveningsOverall
2Dr. Arthur663.5★ (41)London, 19 km away—Most reviews
3ABA Compass Behavior Therapy Services Inc. - ABA Therapy Centre634.8★ (20)London, 30 km awaySat · Sun · Evenings—
4Zdyb Centre for Health Promotion624.8★ (6)London, 24 km away——
5Old North Psychology614.2★ (5)London, 25 km away——
6McKenzie Psychology603.3★ (11)London, 25 km awaySat · Evenings—
7Dr. Forbes & Associates603.3★ (4)London, 25 km away——
8Clayton Joan P Dr602.3★ (3)London, 25 km away——
9Holistic Psychoeducational Services575.0★ (3)London, 28 km awaySat · Evenings—
10Haven Psychological Services574.4★ (7)London, 25 km away——

The 26 best psychologists in St. Thomas, 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.

  1. Ranked #1 in St. Thomas

    #1 EDify Elgin (Saint Thomas Psychoeducational Assessments)

    Based in St. Thomas

    68/100RP Score

    Ranked #1 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 3.0★ from 3 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 3.0★ from 3 Google reviews
    Hours
    Mon–Wed 9 AM–7:30 PM · Thu–Fri 9 AM–4:30 PM · Sat–Sun closed
    Address
    15 St Catharine St #204, St Thomas, ON N5P 2V7
    View profile for EDify Elgin (Saint Thomas Psychoeducational Assessments)(226) 582-9933

  2. #2 Dr. Arthur

    Based in London, 19 km away

    66/100RP Score

    Ranked #2 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 3.5★ from 41 Google reviews.

    Based on 6 of 8 factors; recency and availability not yet collected.

    • 3.5★ from 41 Google reviews
    Address
    975 Willow Dr, London, ON N6E 1P4
    View profile for Dr. Arthur(519) 681-4982

  3. #3 ABA Compass Behavior Therapy Services Inc. - ABA Therapy Centre

    Based in London, 30 km away

    63/100RP Score

    Ranked #3 because of specialty focus and its Google rating: listed on Google as “Child psychologist”, 4.8★ from 20 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 4.8★ from 20 Google reviews
    Hours
    Mon–Fri 8:30 AM–7 PM · Sat 9 AM–3 PM · Sun 8:30 AM–3 PM
    Address
    1589 Fanshawe Park Rd E, London, ON N5X 0B9
    View profile for ABA Compass Behavior Therapy Services Inc. - ABA Therapy Centre(519) 659-0000

  5. #5 Old North Psychology

    Based in London, 25 km away

    61/100RP Score

    Ranked #5 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 4.2★ from 5 Google reviews.

    Based on 6 of 8 factors; recency and availability not yet collected.

    • 4.2★ from 5 Google reviews
    Address
    437 Oxford St E, London, ON N5Y 3H5
    View profile for Old North Psychology(519) 992-2077

  6. #6 McKenzie Psychology

    Based in London, 25 km away

    60/100RP Score

    Ranked #6 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 3.3★ from 11 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 3.3★ from 11 Google reviews
    Hours
    Mon–Fri 8 AM–9 PM · Sat 10 AM–4 PM · Sun closed
    Address
    186 Albert St #305, London, ON N6A 1M1
    View profile for McKenzie Psychology(519) 432-6200

  7. #7 Dr. Forbes & Associates

    Based in London, 25 km away

    60/100RP Score

    Ranked #7 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 3.3★ from 4 Google reviews.

    Based on 6 of 8 factors; recency and availability not yet collected.

    • 3.3★ from 4 Google reviews
    Address
    435 Oxford St E, London, ON N5Y 3H5
    View profile for Dr. Forbes & Associates(519) 280-6697

  8. #8 Clayton Joan P Dr

    Based in London, 25 km away

    60/100RP Score

    Ranked #8 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 2.3★ from 3 Google reviews.

    Based on 6 of 8 factors; recency and availability not yet collected.

    • 2.3★ from 3 Google reviews
    Address
    513 Princess Ave, London, ON N6B 2B7
    View profile for Clayton Joan P Dr(519) 673-4091

  9. #9 Holistic Psychoeducational Services

    Based in London, 28 km away

    57/100RP Score

    Ranked #9 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 5.0★ from 3 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon 8:30 AM–5:30 PM · Tue closed · Wed 5 PM–7:30 PM · Thu 1:30 PM–7:30 PM · Fri 8 AM–7 PM · Sat 12 PM–5 PM · Sun closed
    Address
    1124 Gainsborough Rd #10, London, ON N6H 5L5
    View profile for Holistic Psychoeducational Services(519) 691-7400

  10. #10 Haven Psychological Services

    Based in London, 25 km away

    57/100RP Score

    Ranked #10 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 4.4★ from 7 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 4.4★ from 7 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    612 Colborne St #202, London, ON N6B 2V2
    View profile for Haven Psychological Services(226) 448-0360

  12. #12 Ferndale Psychology

    Based in London, 24 km away

    56/100RP Score

    Ranked #12 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 5.0★ from 3 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 9:30 AM–4 PM · Sat–Sun closed
    Address
    333 Queens Ave, London, ON N6B 1X2
    View profile for Ferndale Psychology(519) 200-4895

  13. #13 Cobrin Peter Dr

    Based in London, 25 km away

    56/100RP Score

    Ranked #13 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 4.7★ from 3 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 4.7★ from 3 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    450 Central Ave, London, ON N6B 2E8
    View profile for Cobrin Peter Dr(519) 433-2001

  14. #14 Cronk and Associates

    Based in London, 26 km away

    56/100RP Score

    Ranked #14 because of specialty focus and its Google rating: listed on Google as “Psychologist”, 5.0★ from 4 Google reviews.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    3 Kingston Pl, London, ON N6H 4C9
    View profile for Cronk and Associates(519) 657-9771

  17. #17 Better Minds Counselling

    Based in London, 25 km away

    52/100RP Score

    Ranked #17 because of its Google rating and specialty focus: 5.0★ from 16 Google reviews, listed on Google as “Psychotherapist”.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 16 Google reviews
    Hours
    Mon–Fri 9 AM–9 PM · Sat–Sun 9 AM–5 PM
    Address
    159 Albert St Upper Unit, London, ON N6A 1L9
    View profile for Better Minds Counselling(226) 785-3038

  20. #20 Hamed Psychosocial Clinic

    Based in London, 19 km away

    49/100RP Score

    Ranked #20 because of its Google rating and specialty focus: 5.0★ from 3 Google reviews, listed on Google as “Psychotherapist”.

    Based on 6 of 8 factors; recency and availability not yet collected.

    • 5.0★ from 3 Google reviews
    Address
    1352 Wharncliffe Rd S, London, ON N6L 1K3
    View profile for Hamed Psychosocial Clinic(226) 678-9007

  21. #21 Modern Psych - Eating Disorder, Anxiety & Performance Counselling

    Based in London, 24 km away

    49/100RP Score

    Ranked #21 because of its Google rating and specialty focus: 5.0★ from 12 Google reviews, listed on Google as “Counselor”.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 12 Google reviews
    Hours
    Mon–Fri 9 AM–9 PM · Sat 9 AM–5 PM · Sun closed
    Address
    124 Dundas St 2nd Floor, London, ON N6A 1G1
    View profile for Modern Psych - Eating Disorder, Anxiety & Performance Counselling(289) 672-2542

  23. #23 Theravive

    Based in London, 30 km away

    45/100RP Score

    Ranked #23 because of its Google rating and specialty focus: 5.0★ from 9 Google reviews, listed on Google as “Counselor”.

    Based on 7 of 8 factors; recency not yet collected.

    • 5.0★ from 9 Google reviews
    Hours
    Mon–Fri 9:30 AM–5:30 PM · Sat closed · Sun 2 PM–5:30 PM
    Address
    404 Whisker Ct, London, ON N5X 4L3
    View profile for Theravive(519) 642-1966

  24. #24 D​ream Wellness

    Based in London, 24 km away

    45/100RP Score

    Ranked #24 because of its Google rating and specialty focus: 4.9★ from 7 Google reviews, listed on Google as “Psychotherapist”.

    Based on 7 of 8 factors; recency not yet collected.

    • 4.9★ from 7 Google reviews
    Hours
    Mon–Thu 9 AM–5:30 PM · Fri 9 AM–4:30 PM · Sat–Sun closed
    Address
    200 Queens Ave Unit 120, London, ON N6A 1J3
    View profile for D​ream Wellness(519) 223-7171

  25. #25 Archways Centre for CBT

    Based in London, 23 km away

    44/100RP Score

    Ranked #25 because of its Google rating and specialty focus: 2.8★ from 12 Google reviews, listed on Google as “Psychotherapist”.

    Based on 7 of 8 factors; recency not yet collected.

    • 2.8★ from 12 Google reviews
    Hours
    Mon–Fri 8:30 AM–4 PM · Sat–Sun closed
    Address
    460 Springbank Dr Ste 205, London, ON N6J 0A8
    View profile for Archways Centre for CBT(519) 472-6612

How we ranked St. Thomas psychologists

We scored 26 St. Thomas psychologists 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.

Read the full method: formula, sources and exclusions

RP Score factors and weights
FactorWeightComputed fromIn St. Thomas data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume5%Number of Google reviews, compared with the most-reviewed practice on the listMeasured
Recency5%Share of Google reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, and round-the-clock or same-day availabilityMeasured
Specialty focus25%How clearly the practice does this specialty (its Google category and name)Measured
Proximity15%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The practice has claimed its Ranked Psychologists profile (free or paid earn the same)Measured
Partnered5%The practice links to Ranked Psychologists from its own website with our badge, checked periodicallyMeasured

How to choose a psychologist

  1. Check the license with the state or provincial board that issued it; most boards publish a free online lookup.
  2. Make sure they regularly work with clients who have your concern, and ask what approach they use and why.
  3. If you may need testing as well as therapy (for example for ADHD or memory concerns), ask whether the practice does assessments itself.
  4. 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.
  5. Check practical fit: in-person or online sessions, evening times, and how soon they have an opening.
  6. After a few sessions, ask yourself whether you feel heard. Changing to a different provider is common and fine.

Questions to ask a psychologist

  • Are you accepting new clients, and how soon could I start?
  • Which license do you hold, and in which state or province?
  • How often do you work with concerns like mine?
  • Do you offer psychological testing, or therapy only?
  • 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.

Psychologists in St. Thomas: frequently asked questions

Who is the best psychologist in St. Thomas?

By RP Score, the highest-ranked psychologist in St. Thomas, ON is EDify Elgin (Saint Thomas Psychoeducational Assessments) with an RP Score of 68/100. It has 3.0★ from 3 Google reviews. It is open evenings. Dr. Arthur (#2) and ABA Compass Behavior Therapy Services Inc. - ABA Therapy Centre (#3) follow. We ranked 26 psychologists on eight factors, last updated November 9, 2026.

How many psychologists are there in St. Thomas?

RankedPsychologists ranks 26 psychologists serving St. Thomas, ON. 1 of them is based in St. Thomas; the rest serve it from nearby towns. 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 psychologists in St. Thomas work on weekends?

6 of 26 ranked psychologists post Saturday hours and 3 post Sunday hours. The highest-ranked open Saturdays are ABA Compass Behavior Therapy Services Inc. - ABA Therapy Centre (#3), McKenzie Psychology (#6) and Holistic Psychoeducational Services (#9). Posted hours are office hours; many practices also offer evening or online sessions by appointment.

What Google rating do St. Thomas psychologists have?

The median Google rating among 26 rated psychologists in St. Thomas is 4.8★, with a median of 6 reviews. Dr. Arthur has the most, 41 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does RankedPsychologists rank psychologists?

Each psychologist 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 psychologists outside St. Thomas count in this ranking?

Yes, if they are within 32 km of the St. Thomas city centre, our service radius for psychologists. 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 psychologists 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 psychologists in St. Thomas ranked?

Each practice gets an RP Score from 0 to 100 from 8 published factors, including its Google rating, how clearly it focuses on psychology and how close it is. Sponsored placements are shown separately and never change rank. The score does not measure treatment outcomes.

What is the difference between a psychologist and a therapist?

“Psychologist” is a protected title: only people licensed by a state or provincial psychology board may use it. Most hold a doctorate (PhD or PsyD) and are trained in psychological testing as well as therapy. “Therapist” is a general word: licensed counselors, clinical social workers and marriage and family therapists also provide therapy under their own licenses.

Can I see a psychologist 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 St. Thomas

  1. November 2026: RP Scores recalculated for 26 psychologists serving St. Thomas.

More psychologists and St. Thomas pages