Company lists · Data refreshed September 2026

Top 23 Patient recruitment services based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 59 companies tracked

RevenueBase identified 59 patient recruitment services headquartered in Canada as of September 2026 and tracks 1,816 professional contacts across them, including 861 with verified work emails and 104 with mobile numbers. Toronto is the largest hub.

This list covers patient recruitment 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

59Companies

1,816Contacts tracked

861Verified emails

104Mobile numbers

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The 23 largest patient recruitment services based in Canada

Ranked by team size

Top 23 of 59 patient recruitment services based in Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names patient recruitment services: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Pharma Medica Research INCIndirect evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	201-500	568
	“Pharma Medica Research is a full service early phase contract research organization.” Source: company website · checked Sep 5, 2026
2	JSS Medical ResearchIndirect evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	201-500	405
	“JSS Medical Research is a full service clinical research organization (CRO) with strong academic affiliations offering a wide range of services internationally.” Source: company website · checked Sep 5, 2026
3	TRIOPartial evidence	Edmonton, AB, CanadaHQ checked Sep 5, 2026	201-500	232
	“TRIO is a unique, full-service oncology clinical research organization (CRO) that leverages the strengths of our worldwide network of Investigators, academic leaders, patient…” Source: company website · checked Sep 5, 2026
4	Probity Medical Research Inc. PMRIndirect evidence	Waterloo, ON, CanadaHQ checked Sep 5, 2026	51-200	84
	“Probity Medical Research (PMR) is a leading clinical research consortium with over 75 clinical trials sites.” Source: company website · checked Sep 5, 2026
5	Diex ResearchIndirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 5, 2026	51-200	66
	“Dedicated exclusively to clinical research, Diex Research is a thriving company with international experience that provides a unique business model and an opportunity for private…” Source: company website · checked Sep 5, 2026
6	Syreon Health SciencesIndirect evidence	Vancouver, BC, CanadaHQ checked Sep 5, 2026	51-200	47
	“INTERNATIONAL CLINICAL RESEARCH FOR COMPLEX DISEASES Syreon is an investigator-led Clinical Research Organization (CRO) that brings together senior investigators, deep domain…” Source: company website · checked Sep 5, 2026
7	Ozmosis Research INCIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	45
	“Ozmosis Research is an independent, entrepreneurial clinical trials management company in Canada operating as a social enterprise (not for profit).” Source: company website · checked Sep 5, 2026
8	Stiris Research INCIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	51-200	39
	“Stiris Research is an entrepreneurial Clinical Trial Management company providing Phase I through full-service support to Biotechnology and Biopharmaceutical companies.” Source: company website · checked Sep 5, 2026
9	Scimega Expert Oncology CROIndirect evidence	Laval, QC, CanadaHQ checked Sep 5, 2026	11-50	18
	“Founded in 1997, Scimega is a specialized CRO skilled in collaborative vendor teaming with 25 years unparalleled Canadian oncology experience, 100+ successful oncology clinical…” Source: company website · checked Sep 5, 2026
10	Refuah Solutions LTDIndirect evidence	Winnipeg, MB, CanadaHQ checked Sep 5, 2026	1-10	14
	“Established in 2018 by a number of senior clinical investigators and study coordinators, Refuah Solutions Ltd.(RFL) is a privately held company headquartered in Canada with its…” Source: company website · checked Sep 5, 2026
11	Centre DE Recherche Saint-LouisIndirect evidence	Québec, QC, CanadaHQ checked Sep 5, 2026	11-50	11
	“Fondé en par les Drs Pierre Lachance et René Therrien, le Centre de recherche en Études cliniques de la Clinique médicale Saint-Louis favorise l’épanouissement des sciences…” Source: company website · checked Sep 5, 2026
12	Trial Management Group INCIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	8
	“Excellence in Clinical Investigations Trial Management Group Inc.(TMG) is Canada’s leading clinical investigator network with the largest number of experienced primary care and…” Source: company website · checked Sep 5, 2026
13	Prime Site Research Solutions INCIndirect evidence	Edmonton, CanadaHQ checked Sep 5, 2026	11-50	8
	“Primesite Research Solutions is an Integrative Research Organization and Site Network based out of Western Canada.” Source: company website · checked Sep 5, 2026
14	Q-CrocIndirect evidence	Québec, QC, CanadaHQ checked Sep 5, 2026	11-50	8
	“The Quebec - Clinical Research Organization in Cancer (Q-CROC) is a not-for-profit organization that has been active since 2008.” Source: company website · checked Sep 5, 2026
15	Ecogene-21Indirect evidence	Saguenay, QC, CanadaHQ checked Sep 5, 2026	11-50	7
	“A non-for-profit (NPO) clinical research organization dedicated to access to innovations for unmet medical needs, coordinated from the Saguenay–Lac-Saint-Jean region and…” Source: company website · checked Sep 5, 2026
16	Q&t ResearchIndirect evidence	Sherbrooke, QC, CanadaHQ checked Sep 5, 2026	11-50	7
	“Q&T Research Sherbrooke is a multi-therapeutic dedicated research center.” Source: company website · checked Sep 5, 2026
17	Tdda Specialty ResearchPartial evidence	Vaughan, ON, CanadaHQ checked Sep 5, 2026	11-50	7
	“At TDDA, our mission is to deliver high quality clinical trial services to our clients in the pharmaceutical industry while providing physicians and patients access to advanced…” Source: company website · checked Sep 5, 2026
18	Alpha Recherche CliniqueIndirect evidence	Québec, QC, CanadaHQ checked Sep 5, 2026	11-50	6
	“Alpha Recherche Clinique est une entreprise de recherche clinique privée dans la région de Québec fondée par des infirmières en 2008.” Source: company website · checked Sep 5, 2026
19	Bluewater Clinical Research GroupIndirect evidence	Sarnia, ON, CanadaHQ checked Sep 5, 2026	1-10	6
	Source: company website · checked Sep 5, 2026
20	Purpose Life SciencesIndirect evidence	Vancouver, BC, CanadaHQ checked Sep 5, 2026	11-50	5
	“Purpose Life Sciences brings life changing innovations to global clinical trials.” Source: company website · checked Sep 5, 2026
21	Montreal Health Innovations Coordinating Center MhiccIndirect evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	51-200	3
	“The Montreal Health Innovations Coordinating Center (MHICC) is a full service academic clinical research organization (CRO), providing services to the academic community and to…” Source: company website · checked Sep 5, 2026
22	DOCQCIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	2
	“Welcome to our innovative clinical trial solutions.” Source: company website · checked Sep 5, 2026
23	Ethica CRO INCIndirect evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	11-50	1
	“We are a full-service, accredited CRO managing ethical clinical research on drugs, biologics, medical devices and natural health products.” Source: company website · checked Sep 5, 2026

Showing 23 of 59 patient recruitment services based in Canada

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Patient recruitment services based in Canada at a glance

As of Sep 5, 2026

11-50Median size (employees)

TorontoLargest hub · 13 HQs

104Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Verified emails by last verification

0–30

794

31–60

61–90

90–180

180+

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 patient recruitment services, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “patient recruitment services”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among patient recruitment 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 an evidence 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, 861 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 5, 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

How many patient recruitment services are there based in Canada?

RevenueBase identified 59 patient recruitment 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?

Pharma Medica Research INC, headquartered in Mississauga, tops this list with the largest team on record.

Which city has the most patient recruitment services?

Toronto leads with 13 headquartered companies, followed by Montreal (7) and Edmonton (5).

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 861 verified decision-maker contacts tracked across these 59 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 5, 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 SmartSearch, 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.