Company lists · Data refreshed October 2026

Top 20 Clinical protocol development firms based in the Netherlands

RevenueBase identified 58 company matches for clinical protocol development firms associated with the Netherlands as of October 2026 and tracks 979 professional contacts across them, including 434 with verified work emails. Amsterdam is the largest hub.

This list covers company matches for clinical protocol development firms associated with the Netherlands, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 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 RevenueBase SmartSearch · Exact Recorded Oct 9, 2026 How this list was built
58Companies
979Contacts tracked
434Verified emails
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The 20 largest clinical protocol development firms based in the Netherlands

Ranked by team size
Top 20 of 58 company matches for clinical protocol development firms based in the Netherlands, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLeiden, NetherlandsHQ recorded Oct 9, 2026201-500365 contacts →

Exact match

“The CRO for data-intensive, early phase clinical studies.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2Exact matchZeist, NetherlandsHQ recorded Oct 9, 2026201-500185 contacts →

Exact match

“P95 Julius Clinical is a global, science-led contract research organization (CRO) supporting clinical development from early-phase trials through late-phase and real-world…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3Exact matchTilburg, NetherlandsHQ recorded Oct 9, 202611-5038 contacts →

Exact match

“As a drug development consultancy company, 3D-PharmXchange brings a range of solutions to companies, by designing and executing optimized product development scenario’s along…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4Exact matchSchiphol-rijk, NetherlandsHQ recorded Oct 9, 202651-20033 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5Exact matchMaarssen, NetherlandsHQ recorded Oct 9, 202651-20023 contacts →

Exact match

“CR2O is a full-service Contract Research Organization.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6Exact matchLiempde, NetherlandsHQ recorded Oct 9, 20261-1012 contacts →

Exact match

“It's all about getting the dose right ".”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7Exact matchNorg, NetherlandsHQ recorded Oct 9, 202611-5011 contacts →

Exact match

“Personal business, Personal touch-that’s what sets us apart for our clients but also the site staff.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8Exact matchRoosendaal, NetherlandsHQ recorded Oct 9, 202611-5010 contacts →

Exact match

“For 25 years, Siron Clinical has been a leading provider of flexible, high-quality CRO services across Europe, Israel, and Turkey.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9Exact matchLosser, NetherlandsHQ recorded Oct 9, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10Exact matchAmsterdam, NetherlandsHQ recorded Oct 9, 20261-107 contacts →

Exact match

“Finding solutions to your preclinical challenges J&S Preclinical Solutions is a team of highly experienced consultants working at the interface of pharmacology, toxicology, and…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11Exact matchGroningen, NetherlandsHQ recorded Oct 9, 20261-107 contacts →

Exact match

“DELPHINIUM is a dedicated and dynamic company, comprised of experienced professionals committed to Phase I clinical pharmacology.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12Exact matchHoofddorp, NetherlandsHQ recorded Oct 9, 202611-506 contacts →

Exact match

“We’ve moved!”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13Exact matchArnhem, NetherlandsHQ recorded Oct 9, 20261-105 contacts →

Exact match

“a CRO that is specialized in Medical Devices and is small enough to care, but big enough to matter!” Applied Clinical Services BV is an Clinical Research Organization (CRO)…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14Exact matchZevenbergen, NetherlandsHQ recorded Oct 9, 20261-103 contacts →

Exact match

“Sourcia, your high-experienced, flexible and independent partner in clinical development.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15Exact matchAmsterdam, NetherlandsHQ recorded Oct 9, 20261-103 contacts →

Exact match

“Medex15 offers medical and clinical expertise to pharmaceutical and biotech companies, and investigators.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16Exact matchLelystad, NetherlandsHQ recorded Oct 9, 202611-502 contacts →

Exact match

“BMclinical is a subsidiary of the BModesto Group which is part of the Uniphar Group.”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17Exact matchRotterdam, NetherlandsHQ recorded Oct 9, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18Exact matchDuivendrecht, NetherlandsHQ recorded Oct 9, 20261-102 contacts →

Exact match

“Pharma Advice & Solutions is an independent consulting company which offers, along with its key partners, a fully comprehensive platform to support the medical and pharmaceutical…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19Exact matchThe Hague, NetherlandsHQ recorded Oct 9, 20261-101 contacts →

Exact match

“Clinical research consultancy with support for clinical research in many aspects, such as Systematic literature reviews, protocol development, sample size calculations…”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20Exact matchMeppel, NetherlandsHQ recorded Oct 9, 20261-101 contacts →

Exact match

“Service Provider for your Clinical Monitoring needs”

Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

Showing 20 of 58 clinical protocol development firms based in the Netherlands

See the full list, filter by size, metro and specialty, and access 434 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clinical protocol development firms based in the Netherlands at a glance

As of Oct 9, 2026
44.3%Verified-email coverage
16.9Average contacts per company
1-10Median size (employees)
6.9%Largest-city concentration · Amsterdam
Oct 9, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
8
51-200
8
201-500
4
501-1,000
2
10001+
1

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 58 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the Netherlands whose business descriptions match “clinical protocol development firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 434 professional contacts with verified work emails across the full matched dataset. 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 October 9, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “clinical protocol development firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clinical protocol development firms are there based in the Netherlands?

RevenueBase identified 58 company matches for clinical protocol development firms associated with the Netherlands as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Centre For Human Drug Research tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most clinical protocol development firms?

Amsterdam leads with 4 company records, followed by Rotterdam (4) and Groningen (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 434 professional contacts with verified work emails tracked across these 58 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 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.