Company lists · Data refreshed September 2026

Top 25 Clinical research organizations based in San Diego, United States

Name: Clinical research organizations based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 84 companies tracked

RevenueBase identified 84 clinical research organizations headquartered in San Diego, United States as of September 2026 and tracks 1,916 professional contacts across them, including 1,020 with verified work emails. Miami is the largest hub.

This list covers clinical research organizations headquartered in San Diego, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

84Companies

1,916Contacts tracked

1,020Verified emails

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The 25 largest clinical research organizations based in San Diego, United States

Ranked by team size

Top 25 of 84 clinical research organizations based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clinical research organizations: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Abzena	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	501-1,000	456 contacts →
	Indirect evidence “Abzena is the leading end-to-end bioconjugate, ADC, and complex biologics CDMO + CRO.” Source: RevenueBase Database · checked Sep 16, 2026
2	Crown Bioscience	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	441 contacts →
	Partial 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, 2026
3	Prosciento, INC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	201-500	181 contacts →
	Strong evidence “ProSciento is the leading clinical research organization focused on the continuum of metabolic diseases.” Source: RevenueBase Database · checked Sep 16, 2026
4	Sequoia Biotech Consulting	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	201-500	101 contacts →
	Indirect evidence “In September 2024, Sequoia Biotech Consulting merged with Syner-G and officially rebranded as Syner-G in 2025.” Source: RevenueBase Database · checked Sep 16, 2026
5	Therapeutics INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	79 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
6	Chemdiv, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	501-1,000	57 contacts →
	Partial evidence “ChemDiv, a fully Integrated Target-to-Market Contract Research Organization (CRO) headquartered in San Diego, CA USA.” Source: RevenueBase Database · checked Sep 16, 2026
7	Vanguard Clinical, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “Healthcare is about people.” Source: RevenueBase Database · checked Sep 16, 2026
8	Artemis Institute For Clinical Research	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	47 contacts →
	Partial evidence “We understand drug development in the clinical trial setting.” Source: RevenueBase Database · checked Sep 16, 2026
9	Radicle Science	Partial evidence	San Diego, United StatesHQ checked Sep 16, 2026	11-50	44 contacts →
	Partial evidence “Radicle Science enables health and wellness companies to generate real-world, clinical-grade evidence without the legacy costs.” Source: RevenueBase Database · checked Sep 16, 2026
10	Trialfacts	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “Founded in 2006, Trialfacts specializes in patient recruitment for clinical trials across the United States, New Zealand, and Australia.” Source: RevenueBase Database · checked Sep 16, 2026
11	Pharmapace, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
12	Phenovista Biosciences	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “Founded in 2014, PhenoVista is a San Diego-based CRO specializing in the development of cell-based, in vitro assays, with an emphasis on phenotypic screening and high-content…” Source: RevenueBase Database · checked Sep 16, 2026
13	Enqubio INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “EnquBio is a wholly owned and operated drug development CRO out of San Diego, CA.” Source: RevenueBase Database · checked Sep 16, 2026
14	Acelabio	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Strong evidence “AcelaBio, wholly owned by The Alimentiv Health Trust, was incorporated in 2020 and aims to meet the growing clinical research demand for quality and efficiency in laboratory…” Source: RevenueBase Database · checked Sep 16, 2026
15	EZ Labs	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “EZ Labs LLC is a privately owned cGMP compliant analytical laboratory in the heart of San Diego’s thriving biotech community.” Source: RevenueBase Database · checked Sep 16, 2026
16	Sherpa Clinical Packaging A PCI Pharma Services Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “Sherpa Clinical Packaging was founded in 2010 in the heart of the San Diego biotech community.” Source: RevenueBase Database · checked Sep 16, 2026
17	Aroga Biosciences	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	15 contacts →
	Indirect evidence “Aroga Biosciences is an award-winning CRO that provides highly experienced regulatory writing and submission services for biotech and pharmaceutical projects.” Source: RevenueBase Database · checked Sep 16, 2026
18	M&b Sciences, INC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	13 contacts →
	Strong evidence “M&B Sciences, Inc, is a minority owned, tech focused life science research firm that is an industry leader in recruiting patients for global clinical trials, market research and…” Source: RevenueBase Database · checked Sep 16, 2026
19	Acculab Life Sciences	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Acculab is a rapidly growing, OLAW-assured, preclinical CRO in the San Diego area, designed to assist you with every step along the R&D in vivo journey.” Source: RevenueBase Database · checked Sep 16, 2026
20	OBI Pharma USA	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “OBI Pharma USA, Inc.(OBI USA) is the wholly-owned subsidiary of OBI Pharma, Inc.(4174.TWO) OBI USA’s mission is to lead the US and European clinical trials of OBI’s novel…” Source: RevenueBase Database · checked Sep 16, 2026
21	Clindart, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	1-10	11 contacts →
	Partial evidence “ClinDART is a pioneer in designing custom data management and statistical programming solutions that maximize your chances of a successful clinical trial in the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
22	Therapeutics Clinical Research	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	11 contacts →
	Strong evidence “Therapeutics Clinical Research is a clinical research facility that tests the safety and effectiveness of investigational medications prior to FDA approval.” Source: RevenueBase Database · checked Sep 16, 2026
23	Pacific Research Network	Strong evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Strong evidence “Pacific Research Network (PRN) is a Southern California clinical research facility that specializes in examining new, investigational medications for the treatment of a variety of…” Source: RevenueBase Database · checked Sep 16, 2026
24	Levena Biopharma	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	10 contacts →
	Partial evidence “Levena Biopharma is a global ADC CRO/CDMO dedicated to advancing Antibody Drug Conjugate programs from discovery to the clinic and beyond.” Source: RevenueBase Database · checked Sep 16, 2026
25	Flagship Research	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “We are Market Research company, located in beautiful San Diego, California.” Source: RevenueBase Database · checked Sep 16, 2026

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: clinical research organizations. 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 clinical research organizations.
Partial evidence: Its own public description names part of clinical research organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical research organizations. 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 84 clinical research organizations based in San Diego, United States

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Clinical research organizations based in San Diego, United States at a glance

As of Sep 16, 2026

53.2%Verified-email coverage

22.8Average contacts per company

1-10Median size (employees)

108.3%Largest-city concentration · Miami

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 84 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 research organizations, 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 San Diego, United States whose own description of what they do matches “clinical research organizations”. 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 research organizations), 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 research organizations, and records with no verified work email. Companies headquartered outside San Diego 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, 1,020 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.

Clinical research organizations 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 research organizations, 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 research organizations are there based in San Diego, United States?

RevenueBase identified 84 clinical research organizations headquartered in San Diego, 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?

Abzena, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most clinical research organizations?

Miami leads with 91 headquartered companies, followed by New York (84) and San Diego (84).

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 1,020 verified decision-maker contacts tracked across these 84 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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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.