Company lists · Data refreshed September 2026

Top 9 Patient recruitment services based in Brazil

RevenueBase identified 32 patient recruitment services headquartered in Brazil as of September 2026 and tracks 587 professional contacts across them, including 115 with verified work emails and 10 with mobile numbers. Sao Paulo is the largest hub.

This list covers patient recruitment services headquartered in Brazil, 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
32Companies
587Contacts tracked
115Verified emails
10Mobile numbers
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The 9 largest patient recruitment services based in Brazil

Ranked by team size
Top 9 of 32 patient recruitment services based in Brazil, 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.
#CompanyHeadquartersEmployeesContacts
1
Smart ResearchIndirect evidence
BrazilHQ checked Sep 5, 202611-5066

“We reduce your effort and time spent recruiting research participants, allowing you to focus on other stages of the product and service development process.”

Source: company website · checked Sep 5, 2026
2Sao Paulo, BrazilHQ checked Sep 5, 202651-20058

“The Science Valley Research Institute (SVRI) is a global company specialized in clinical research intelligence and research and development (R&D) services in the healthcare sector.”

Source: company website · checked Sep 5, 2026
3
CepclinIndirect evidence
Natal, BrazilHQ checked Sep 5, 2026n/a31

“O CePCLIN é uma empresa de pesquisa clínica com 14 anos de qualidade e comprometimento, dedicada à investigação na área de doenças infecciosas e outras.”

Source: company website · checked Sep 5, 2026
4
IbpclinIndirect evidence
Rio De Janeiro, BrazilHQ checked Sep 5, 202611-5029

“O IBPClin é um centro de pesquisa clínico que, há duas décadas, participa de estudos de desenvolvimento de novos medicamentos para diferentes doenças.”

Source: company website · checked Sep 5, 2026
5
OncositeIndirect evidence
Ijuí, BrazilHQ checked Sep 5, 202611-5014

“O Centro de Pesquisa Clínica em Oncologia Oncosite, nasceu da necessidade de oferecer um atendimento qualificado para pacientes oncológicos.”

Source: company website · checked Sep 5, 2026
6
Insight Centro DE PesquisasIndirect evidence
Porto Alegre, BrazilHQ checked Sep 5, 20261-106

“O Insight, como centro de pesquisa clínica, tem o objetivo de desenvolver e conduzir estudos clínicos de forma inovadora, por meio de uma equipe profissional qualificada, sempre…”

Source: company website · checked Sep 5, 2026
7
CK RecrutamentoIndirect evidence
São Caetano Do Sul, BrazilHQ checked Sep 5, 20261-103

“Somos especialistas em encontrar a pessoa certa para a sua pesquisa.”

Source: company website · checked Sep 5, 2026
8
Conecta MEDPartial evidence
Macaé, BrazilHQ checked Sep 5, 20261-103

“The best experience for your patients.”

Source: company website · checked Sep 5, 2026
9
IOP PesquisaIndirect evidence
Curitiba, BrazilHQ checked Sep 5, 20261-102

“O Centro de Pesquisas Clínicas do IOP faz parte de um grupo seleto de centros reconhecido mundialmente por contribuir para o avanço da oncologia e possui grande destaque no…”

Source: company website · checked Sep 5, 2026

Showing 9 of 32 patient recruitment services based in Brazil

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Patient recruitment services based in Brazil at a glance

As of Sep 5, 2026
11-50Median size (employees)
Sao PauloLargest hub · 6 HQs
10Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
15
11-50
13
51-200
3
501-1,000
1

Verified emails by last verification

0–30
99
31–60
13
61–90
2
90–180
0
180+
1

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 Brazil 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 Brazil 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, 115 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 Brazil?

RevenueBase identified 32 patient recruitment services headquartered in Brazil 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?

Smart Research, headquartered in Brazil, tops this list with the largest team on record.

Which city has the most patient recruitment services?

Sao Paulo leads with 6 headquartered companies, followed by Porto Alegre (4) and Rio De Janeiro (3).

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 115 verified decision-maker contacts tracked across these 32 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.