Company lists · Data refreshed September 2026

Top 12 Patient recruitment services based in New York, United States

RevenueBase identified 28 patient recruitment services headquartered in New York, United States as of September 2026 and tracks 480 professional contacts across them, including 201 with verified work emails. Miami is the largest hub.

This list covers patient recruitment services headquartered in New York, United States, 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
28Companies
480Contacts tracked
201Verified emails
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The 12 largest patient recruitment services based in New York, United States

Ranked by team size
Top 12 of 28 patient recruitment services based in New York, United States, 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
CastorIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 2026201-500130

“At Castor, we believe in the power of clinical research and the power of technology.”

Source: company website · checked Sep 5, 2026
2
Helios Clinical ResearchIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202651-20080

“Helios Clinical Research actively works with biopharma partners to accelerate the drug approval process.”

Source: company website · checked Sep 5, 2026
3
Equity MedicalIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202651-20040

“Equity Medical is an integrated site network providing high-performance Phase I–IV clinical research across multiple therapeutic areas, purpose-built to expand trial access for…”

Source: company website · checked Sep 5, 2026
4
BuildclinicalStrong evidence
New York, United StatesHQ checked Sep 5, 202611-5016

“BuildClinical is a health technology company that enables academic researchers to accelerate their clinical research patient recruitment efforts by engaging the exact population…”

Source: company website · checked Sep 5, 2026
5New York, NY, United StatesHQ checked Sep 5, 202611-5013

“The Medical Research Network, LLC is a private clinical trials site located in New York, NY.”

Source: company website · checked Sep 5, 2026
6New York, NY, United StatesHQ checked Sep 5, 20261-1012

“Brightside Research Solutions is recognized as a trusted leader in comprehensive operations and fieldwork solutions, specifically designed for healthcare clients.”

Source: company website · checked Sep 5, 2026
7
Alsa ResearchIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202611-507

“Founded in 1994, ALSA Research is a leading clinical research organization that operates clinical research facilities in New York City and Connecticut.”

Source: company website · checked Sep 5, 2026
8New York, NY, United StatesHQ checked Sep 5, 20261-104

“ES Clinical Research Group is a Site Management Organization that is dedicated to providing Sponsors and CRO’s with the best available clinical research sites and patients looking…”

Source: company website · checked Sep 5, 2026
9
Guosa Life SciencesIndirect evidence
New York, United StatesHQ checked Sep 5, 202651-2004

“Guosa Life Sciences (GLS) is a global Contract Research Organization delivering integrated clinical development solutions to pharmaceutical, biotechnology, medical device…”

Source: company website · checked Sep 5, 2026
10
PursuitPartial evidence
New York, United StatesHQ checked Sep 5, 20261-103

“Pursuit is a consultancy on a mission to help health care organizations build deeper, mutually valuable, relationships with patients and caregivers.”

Source: company website · checked Sep 5, 2026
11
SpellbinderIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202611-502

“Our mission is to bring cures to market faster.”

Source: company website · checked Sep 5, 2026
12
Goodland PharmaPartial evidence
New York, United StatesHQ checked Sep 5, 20261-101

“We partner with biotech and pharma companies to ensure the seamless execution of complex clinical trials, providing specialised recruitment expertise that drives success at every…”

Source: company website · checked Sep 5, 2026

Showing 12 of 28 patient recruitment services based in New York, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 201 reachable decision-makers.

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Patient recruitment services based in New York, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
MiamiLargest hub · 57 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
15
11-50
6
51-200
6
201-500
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 28 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 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 New York, United States 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 New York 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, 201 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.

Patient recruitment services by metro in the United States

Frequently asked

How many patient recruitment services are there based in New York, United States?

RevenueBase identified 28 patient recruitment services headquartered in New York, United States 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?

Castor, headquartered in New York, tops this list with the largest team on record.

Which city has the most patient recruitment services?

Miami leads with 57 headquartered companies, followed by Houston (34) and New York (28).

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 201 verified decision-maker contacts tracked across these 28 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.