Company lists · Data refreshed September 2026

Top 9 Cardiology clinics based in the Netherlands

RevenueBase identified 39 cardiology clinics headquartered in the Netherlands as of September 2026 and tracks 1,091 professional contacts across them, including 573 with verified work emails. Amsterdam is the largest hub.

This list covers cardiology clinics headquartered in the Netherlands, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
39Companies
1,091Contacts tracked
573Verified emails
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The 9 largest cardiology clinics based in the Netherlands

Ranked by team size
Top 9 of 39 cardiology clinics based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cardiology clinics: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 19, 2026501-1,000346 contacts →

Indirect evidence

“DC Klinieken is een landelijke zorgorganisatie met zestien zelfstandige klinieken door heel Nederland en een digitale kliniek.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceUtrecht, NetherlandsHQ checked Sep 19, 2026201-500169 contacts →

Partial evidence

Cardiologie Centra Nederland (CCN) is een organisatie van zelfstandige behandelcentra voor cardiologische zorg waar patiënten met hart- en vaatziekten en verwijzers meteen terecht…”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceHeemstede, NetherlandsHQ checked Sep 19, 2026201-500159 contacts →

Indirect evidence

“Snel, Persoonlijk & Verzekerd zonder eigen bijdrage.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceNaarden, NetherlandsHQ checked Sep 19, 202651-200102 contacts →

Indirect evidence

“HartKliniek is een keten van medisch-specialistische diagnostiek- en behandelcentra voor hart- en vaatziekten, waarbij een persoonlijke en holistische aanpak in samenwerking met…”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceAmsterdam, NetherlandsHQ checked Sep 19, 202651-20088 contacts →

Partial evidence

“Since 1977 we have been a trusted ECG analysis partner to hospitals and clinics in Netherlands and beyond.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceRotterdam, NetherlandsHQ checked Sep 19, 202651-20052 contacts →

Indirect evidence

“Capri Hartrevalidatie is een centrum voor poliklinische hartrevalidatie in de regio’s Rotterdam en Den Haag.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceMaastricht, NetherlandsHQ checked Sep 19, 202611-5035 contacts →

Partial evidence

“Kliniek voor Orthopedie, Platische Chirurgie, KNO, Heelkunde en Cardiologie

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceUtrecht, NetherlandsHQ checked Sep 19, 20261-1010 contacts →

Indirect evidence

“De HeartLife kliniek is een Expertise Centrum voor hart en Gezondheid.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceAmsterdam, NetherlandsHQ checked Sep 19, 2026201-5003 contacts →

Partial evidence

“PATIENTENZORG: Het Hartcentrum Amsterdam UMC is een innovatief centrum met cardiologen, cardio thoracaal chirurgen, verpleegkundig specialisten, verpleegkundigen, physician…”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 9 of 39 cardiology clinics based in the Netherlands

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Cardiology clinics based in the Netherlands at a glance

As of Sep 19, 2026
52.5%Verified-email coverage
28.0Average contacts per company
1-10Median size (employees)
5.1%Largest-city concentration · Amsterdam
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
6
51-200
5
201-500
4
501-1,000
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 39 companies.

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 cardiology clinics, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the Netherlands whose own description of what they do matches “cardiology clinics”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cardiology clinics), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among cardiology clinics, and records with no verified work email. Companies headquartered outside Netherlands 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 its RevenueBase Smart Search 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, 573 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 19, 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

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cardiology clinics, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cardiology clinics are there based in the Netherlands?

RevenueBase identified 39 cardiology clinics headquartered in the Netherlands 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?

DC Klinieken, headquartered in Alkmaar, tops this list with the largest team on record.

Which city has the most cardiology clinics?

Amsterdam leads with 2 headquartered companies, followed by Naarden (2) and Rotterdam (2).

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 573 verified decision-maker contacts tracked across these 39 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 19, 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 Smart Search, 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.