Company lists · Data refreshed September 2026
Top 25 Immunodeficiency clinical trial sponsors based in the United States
RevenueBase identified 596 immunodeficiency clinical trial sponsors headquartered in the United States as of September 2026 and tracks 45,711 professional contacts across them, including 19,543 with verified work emails. Miami is the largest hub.
This list covers immunodeficiency clinical trial sponsors headquartered in the 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 16, 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.
The 25 largest immunodeficiency clinical trial sponsors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,530 contacts → | ||||
Partial evidence “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,781 contacts → | ||||
Partial evidence “Precision for Medicine is an industry-leading global clinical research services organization, purpose-built to improve the clinical research and development process for new…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,043 contacts → | ||||
Strong evidence “CTI Clinical Trial and Consulting Services is a global, privately held, research service organization, delivering a complete spectrum of clinical trial and consulting services…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 990 contacts → | ||||
Partial evidence “Navitas Life Sciences is a global Clinical Research partner with over 35 years of expertise in Clinical, Regulatory, Safety, and Data Management solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 971 contacts → | ||||
Partial evidence “Velocity is the world’s leading organization of fully integrated clinical research sites.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 961 contacts → | ||||
Strong evidence “Emmes is a Contract Research Organization delivering complex clinical trials through therapeutic expertise, scientific rigor, and technology-enabled execution.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 847 contacts → | ||||
Partial evidence “CenExel is a leading integrated, wholly owned, nationwide clinical research site network comprised of 18 Centers of Excellence in major metropolitan areas across the U.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 758 contacts → | ||||
Partial evidence “Caidya is a multi-therapeutic clinical research organization (CRO) serving innovators worldwide.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 590 contacts → | ||||
Strong evidence “DM Clinical Research is a network of clinical trial investigator sites with headquarters based out of Houston, Texas.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 532 contacts → | ||||
Indirect evidence “THIS PAGE IS NOT MONITORED.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 441 contacts → | ||||
Indirect evidence “Crown Bioscience, a JSR Life Sciences company, is a global contract research organization (CRO) providing discovery, preclinical, and translational platforms to advance oncology…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 389 contacts → | ||||
Partial evidence “Sitero is a next-generation, site-focused clinical research organization (CRO) for life sciences and institutional research organizations that helps get treatments to market safer…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 367 contacts → | ||||
Strong evidence “Veristat is the science-first full-service drug and biologic CRO and consultancy that integrates strategic planning, regulatory expertise, and clinical trial execution to rapidly…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 321 contacts → | ||||
Strong evidence “Flourish Research is a fully integrated, multi-site clinical trial network serving sponsors and CROs across North America.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 291 contacts → | ||||
Strong evidence “Science 37 is a modern clinical research site that delivers trials directly to patients’ homes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 289 contacts → | ||||
Indirect evidence “Founded in 1979, Technical Resources International, Incorporated (TRI) is a certified Hispanic woman-owned full service contract research organization plus (CRO+).” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 226 contacts → | ||||
Partial evidence “Welcome to K2 Medical Research, a privately-owned clinical research facility with multiple locations in Florida, Tennessee, and Rhode Island.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 201 contacts → | ||||
Partial evidence “EmVenio Clinical Research, a Professional Case Management subsidiary, operates from U.S.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 171 contacts → | ||||
Strong evidence “Frontier Science is an independent not-for-profit organization with proven expertise in the design, conduct, analysis, and reporting of clinical trials and observational studies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 161 contacts → | ||||
Strong evidence “M3 Wake Research is a premier clinical trial network that has been conducting studies since 1984.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 154 contacts → | ||||
Partial evidence “Founded in 2007, Spaulding Clinical is a full-service, state-of-the-art paperless Phase I clinical pharmacology unit.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 134 contacts → | ||||
Strong evidence “At Pinnacle Clinical Research, we are driven by a shared mission to improve lives through innovation in clinical trials.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 134 contacts → | ||||
Indirect evidence “ZeptoMetrix brings together some of the world's leading scientists in the fight against infectious disease.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 123 contacts → | ||||
Partial evidence “Our clinical research network is a collaborative group of providers and sites dedicated to clinical research across multiple therapeutic areas.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 112 contacts → | ||||
Strong evidence “HonorHealth Research Institute is an international destination that is at the forefront of providing patients with a better quality of life through access to clinical trials and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: immunodeficiency clinical trial sponsors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names immunodeficiency clinical trial sponsors.
- Partial evidence
- Its own public description names part of immunodeficiency clinical trial sponsors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name immunodeficiency clinical trial sponsors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 596 immunodeficiency clinical trial sponsors based in the United States
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Immunodeficiency clinical trial sponsors based in the United States at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 596 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 immunodeficiency clinical trial sponsors, 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 United States whose own description of what they do matches “immunodeficiency clinical trial sponsors”. 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 immunodeficiency clinical trial sponsors), 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 immunodeficiency clinical trial sponsors, and records with no verified work email. Companies headquartered outside United States 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, 19,543 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 16, 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.
Immunodeficiency clinical trial sponsors by metro
- Immunodeficiency clinical trial sponsors in Miami32
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 immunodeficiency clinical trial sponsors, 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 immunodeficiency clinical trial sponsors are there based in the United States?
RevenueBase identified 596 immunodeficiency clinical trial sponsors headquartered in the 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?
PPD, headquartered in Waltham, tops this list with the largest team on record.
Which city has the most immunodeficiency clinical trial sponsors?
Miami leads with 32 headquartered companies, followed by Houston (23) and San Diego (14).
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 19,543 verified decision-maker contacts tracked across these 596 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 16, 2026.
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Immunodeficiency clinical trial sponsors by geography
- Immunodeficiency clinical trial sponsors based in Australia
- Immunodeficiency clinical trial sponsors based in Brazil
- Immunodeficiency clinical trial sponsors based in Canada
- Immunodeficiency clinical trial sponsors based in Germany
- Immunodeficiency clinical trial sponsors based in India
- Immunodeficiency clinical trial sponsors based in the United Kingdom
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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.
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- Immunodeficiency clinical trial sponsors based in Australia
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- Immunodeficiency clinical trial sponsors based in Canada
- Immunodeficiency clinical trial sponsors based in Germany
- Immunodeficiency clinical trial sponsors based in India
- Immunodeficiency clinical trial sponsors based in the United Kingdom