Company lists · Data refreshed September 2026

Top 24 Diagnostic companies based in Los Angeles, United States

Name: Diagnostic companies based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 51 companies tracked

RevenueBase identified 51 diagnostic companies headquartered in Los Angeles, United States as of September 2026 and tracks 4,320 professional contacts across them, including 984 with verified work emails. San Diego is the largest hub.

This list covers diagnostic companies headquartered in Los Angeles, 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 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

51Companies

4,320Contacts tracked

984Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 24 largest diagnostic companies based in Los Angeles, United States

Ranked by team size

Top 24 of 51 diagnostic companies based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to diagnostic companies: 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	Radnet	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	10001+	3,126 contacts →
	Indirect evidence “RadNet, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	United Medical Imaging	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	201-500	266 contacts →
	Strong evidence “United Medical Imaging Healthcare is a multi-specialty, diagnostic imaging service company with 30 facilities throughout Los Angeles and Orange County, California.” Source: RevenueBase Database · checked Sep 19, 2026
3	Flow Health	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	501-1,000	169 contacts →
	Strong evidence “Flow Health is a leading provider of diagnostic information services, offering a wide range of diagnostic testing services.” Source: RevenueBase Database · checked Sep 19, 2026
4	ONE Lambda A Thermo Fisher Scientific Brand	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	10001+	167 contacts →
	Strong evidence “As part of Thermo Fisher Scientific, we develop and manufacture products and offer services to advance the science of transplant diagnostics.” Source: RevenueBase Database · checked Sep 19, 2026
5	Pacific Mobile Diagnostics	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	103 contacts →
	Indirect evidence “X‑ray, ultrasound, EKG, and ABI services brought directly to your patients with fast turnaround times, certified technologists, and a live support team available around the clock…” Source: RevenueBase Database · checked Sep 19, 2026
6	Expertmri	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Strong evidence “Expert MRI is an innovative medical diagnostics company with leading expertise especially in Magnetic Resonance Imaging (MRI).” Source: RevenueBase Database · checked Sep 19, 2026
7	Primex Clinical Laboratories	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “At Primex Clinical Laboratories, we're dedicated to enhancing health with precision and passion.” Source: RevenueBase Database · checked Sep 19, 2026
8	Compumed, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “In healthcare, every decision depends on access to clear, actionable data.” Source: RevenueBase Database · checked Sep 19, 2026
9	RDI	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	30 contacts →
	Strong evidence “RDI is a tech-enabled CRO, Biobank, and Lab that helps In Vitro Diagnostic manufacturers who struggle to get FDA clearance for their products by sourcing the blood samples they…” Source: RevenueBase Database · checked Sep 19, 2026
10	HDX Will North America	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “HDX Corporation founded in 1982 in Seoul, Korea as a distributor of medical devices, focused on Ultrasound technologies then progressed in to PET/CT scan, Gamma Camera, and LINAC…” Source: RevenueBase Database · checked Sep 19, 2026
11	Adia Health	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Strong evidence “Adia is transforming healthcare by combining proprietary clinical AI with instant provider payments, solving both the diagnostic accuracy crisis and the financial barriers that…” Source: RevenueBase Database · checked Sep 19, 2026
12	Eyenuk, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	Precise Imaging	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	19 contacts →
	Indirect evidence “At Precise Imaging, we pride ourselves in achieving precise quality images, while creating a comfortable and pleasant environment for our patients.” Source: RevenueBase Database · checked Sep 19, 2026
14	Mylab BOX	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “myLAB Box makes at-home testing easy and accessible for all bodies with 50+ tests across sexual health, wellness, fertility & family planning, nutrition, fitness, and Covid-19 &…” Source: RevenueBase Database · checked Sep 19, 2026
15	Icardio Corporation	Indirect evidence	Los Angeles, United StatesHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “iCardio Corporation is a fee for service model for cardiovascular imaging.” Source: RevenueBase Database · checked Sep 19, 2026
16	Renovaro Biosciences	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Renovaro (NASDAQ: RENB) is pioneering AI-driven precision medicine to transform outcomes for cancer and neurology patients – from early detection to personalized treatment.” Source: RevenueBase Database · checked Sep 19, 2026
17	Golden Star Labs LLC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
18	Sensible Diagnostics, INC	Indirect evidence	Los Angeles, United StatesHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Sensible was spun-out in early 2023 from Curative with the goal of bringing its 10 minute PCR platform (the Sensible Platform) to market.” Source: RevenueBase Database · checked Sep 19, 2026
19	Quickmed Diagnostic, Laboratories	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Strong evidence “Quickmed Diagnostic specializes in fast, accurate, state-of-the-art lab services, working with the leading healthcare providers, health technology companies and employers in the…” Source: RevenueBase Database · checked Sep 19, 2026
20	Biostar Technology International, LLC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Biostar Technology International, LLC is a USA based company established in 2009, with international offices in Los Angeles, California USA, Prague, Czech Republic, EU and St.” Source: RevenueBase Database · checked Sep 19, 2026
21	Genx Laboratories	Indirect evidence	Los Angeles, United StatesHQ checked Sep 19, 2026	51-200	4 contacts →
	Indirect evidence “GenX Laboratories, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
22	Gateway Clinical	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Strong evidence “Gateway Clinical helps to optimize your medical practice by capturing valuable patient data through quality diagnostic products.” Source: RevenueBase Database · checked Sep 19, 2026
23	Cytobay INC	Indirect evidence	Los Angeles, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Liquid Immunocytochemistry platform company for tumor cell detection.” Source: RevenueBase Database · checked Sep 19, 2026
24	K & T Diagnostic, INC	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	2 contacts →
	Strong evidence “K&T Diagnostic, Inc.” Source: RevenueBase Database · checked Sep 19, 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: diagnostic companies. 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 diagnostic companies.
Partial evidence: Its own public description names part of diagnostic companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name diagnostic companies. 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 24 of 51 diagnostic companies based in Los Angeles, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 984 reachable decision-makers.

Free signup · no credit card

View the full list →

Diagnostic companies based in Los Angeles, United States at a glance

As of Sep 19, 2026

22.8%Verified-email coverage

84.7Average contacts per company

11-50Median size (employees)

160.8%Largest-city concentration · San Diego

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 51 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 diagnostic companies, 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 Los Angeles, United States whose own description of what they do matches “diagnostic companies”. 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 diagnostic companies), 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 diagnostic companies, and records with no verified work email. Companies headquartered outside Los Angeles 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, 984 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.

Diagnostic companies 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 diagnostic companies, 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 diagnostic companies are there based in Los Angeles, United States?

RevenueBase identified 51 diagnostic companies headquartered in Los Angeles, 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?

Radnet, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most diagnostic companies?

San Diego leads with 82 headquartered companies, followed by Houston (72) and New York (64).

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 984 verified decision-maker contacts tracked across these 51 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.

Ready to reach these companies? Verified emails and direct dials for all 51 diagnostic companies based in Los Angeles, United States. Start with a free account, no credit card.

Download this list →

Related lists

Diagnostic companies by geography

Browse the directory

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.