Company lists · Data refreshed September 2026

Top 11 Clinical trial staffing based in New York, United States

RevenueBase identified 30 clinical trial staffing headquartered in New York, United States as of September 2026 and tracks 466 professional contacts across them, including 167 with verified work emails. Miami is the largest hub.

This list covers clinical trial staffing 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 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 14, 2026 86% judged on-target in blind review
30Companies
466Contacts tracked
167Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 11 largest clinical trial staffing based in New York, United States

Ranked by team size
Top 11 of 30 clinical trial staffing based in New York, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to clinical trial staffing: 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
1Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 2026201-500130 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202651-20080 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-1012 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-5010 contacts →

Partial evidence

“Elixir Associates provide staffing solutions which span across the life sciences and healthcare industry.”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidenceNew York, United StatesHQ checked Sep 14, 20261-108 contacts →

Partial evidence

“Rx Group is a specialist staffing firm that partners with US-based biotech and pharmaceutical companies to build high-performing teams.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-507 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-104 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-103 contacts →

Indirect evidence

“At, we are strategic partners to the Life Sciences industry, specializing in the talent that powers the drug development lifecycle.”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 14, 202611-502 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 14, 20261-102 contacts →

Partial evidence

“Inspira is redefining success for our life science partners by offering impact-inspired staffing solutions to create unrivalled economic value.”

Source: RevenueBase Database · checked Sep 14, 2026
11Strong evidenceNew York, United StatesHQ checked Sep 14, 20261-101 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 14, 2026

Showing 11 of 30 clinical trial staffing 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 167 reachable decision-makers.

Free signup · no credit card

View the full list →

Clinical trial staffing based in New York, United States at a glance

As of Sep 14, 2026
35.8%Verified-email coverage
15.5Average contacts per company
1-10Median size (employees)
163.3%Largest-city concentration · Miami
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
8
51-200
3
201-500
2

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 30 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 clinical trial staffing, 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 New York, United States whose own description of what they do matches “clinical trial staffing”. 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 clinical trial staffing), 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 clinical trial staffing, 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 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, 167 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 14, 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.

Clinical trial staffing by metro in the United States

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 clinical trial staffing, 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 clinical trial staffing are there based in New York, United States?

RevenueBase identified 30 clinical trial staffing 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 clinical trial staffing?

Miami leads with 49 headquartered companies, followed by New York (30) and Houston (29).

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 167 verified decision-maker contacts tracked across these 30 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 30 clinical trial staffing based in New York, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.