Company lists · Data refreshed September 2026

Top 25 Medical image annotation companies based in the United States

RevenueBase identified 46 medical image annotation companies headquartered in the United States as of September 2026 and tracks 1,812 professional contacts across them, including 554 with verified work emails. Boston is the largest hub.

This list covers medical image annotation companies 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 17, 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 17, 2026 86% judged on-target in blind review
46Companies
1,812Contacts tracked
554Verified emails
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The 25 largest medical image annotation companies based in the United States

Ranked by team size
Top 25 of 46 medical image annotation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to medical image annotation 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceCambridge, MA, United StatesHQ checked Sep 17, 2026501-1,000796 contacts →

Indirect evidence

“CapeStart is a global technology and services company that empowers organizations to compete and thrive in the digital economy.”

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202651-200149 contacts →

Partial evidence

“PaxeraHealth's mission is to democratize AI in medical imaging.”

Source: RevenueBase Database · checked Sep 17, 2026
3Partial evidenceWilmington, DE, United StatesHQ checked Sep 17, 2026201-500148 contacts →

Partial evidence

“Label Your Data is a data annotation & labeling company.”

Source: RevenueBase Database · checked Sep 17, 2026
4Partial evidenceWilmington, DE, United StatesHQ checked Sep 17, 202611-5095 contacts →

Partial evidence

“CVAT (Computer Vision Annotation Tool) is a leading platform for building high-quality visual datasets for vision AI.”

Source: RevenueBase Database · checked Sep 17, 2026
5Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 17, 202651-20062 contacts →

Partial evidence

“Subtle Medical is a medical imaging software company.”

Source: RevenueBase Database · checked Sep 17, 2026
6Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 202651-20059 contacts →

Indirect evidence

“Centaur.ai data empowers you to build and deploy high-stakes AI.”

Source: RevenueBase Database · checked Sep 17, 2026
7Strong evidenceNew York, NY, United StatesHQ checked Sep 17, 2026501-1,00054 contacts →

Strong evidence

“At Keymakr, we provide exceptional image and video data annotation, data creation, data collection, and data validation services for AI/ML computer vision projects of all sizes.”

Source: RevenueBase Database · checked Sep 17, 2026
8Indirect evidenceCherry Hill, NJ, United StatesHQ checked Sep 17, 202611-5039 contacts →

Indirect evidence

“Data Labeler specializes in providing reliable and high-quality training data sets for Machine Learning/Artificial Intelligence initiatives.”

Source: RevenueBase Database · checked Sep 17, 2026
9Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 17, 202611-5037 contacts →

Indirect evidence

“CureMetrix is committed to the advancement of technology that improves disease detection and survival rates worldwide.”

Source: RevenueBase Database · checked Sep 17, 2026
10Indirect evidenceDublin, CA, United StatesHQ checked Sep 17, 202611-5036 contacts →

Indirect evidence

“More than just a PACS system, SARC MedIQ is a complete imaging workflow solution.”

Source: RevenueBase Database · checked Sep 17, 2026
11Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 202611-5031 contacts →

Partial evidence

“QMENTA is a Medical Imaging AI tech company that offers cloud native software solutions for imaging professionals and imaging clinical trials through one single platform.”

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 17, 202611-5025 contacts →

Partial evidence

“VoxelCloud is a start-up company focused on medical artificial intelligence.”

Source: RevenueBase Database · checked Sep 17, 2026
13Partial evidenceSan Francisco, United StatesHQ checked Sep 17, 202651-20022 contacts →

Partial evidence

“StardustAI provides data annotation and data management services to global artificial intelligence companies.”

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceStamford, CT, United StatesHQ checked Sep 17, 202611-5020 contacts →

Indirect evidence

“LifeVoXell.AI to provides a complete imaging and AI platform for Diagnostic Imaging Centers.”

Source: RevenueBase Database · checked Sep 17, 2026
15Partial evidenceClaymonth, United StatesHQ checked Sep 17, 202611-5015 contacts →

Partial evidence

“Teams building medical imaging AI use RedBrick AI to build high quality training datasets.”

Source: RevenueBase Database · checked Sep 17, 2026
16Indirect evidencePittsford, NY, United StatesHQ checked Sep 17, 202611-5010 contacts →

Indirect evidence

“See Beyond the Surface.”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceHouston, TX, United StatesHQ checked Sep 17, 20261-1010 contacts →

Indirect evidence

“LSR is a research services firm supporting clinical product research and development.”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidencePalo Alto, CA, United StatesHQ checked Sep 17, 202611-508 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
19Strong evidenceNew York City, United StatesHQ checked Sep 17, 20261-107 contacts →

Strong evidence

“We provide high powered, custom machine learning software, image analysis algorithms, and medical graphical user interface (GUI) development for desktop and web platforms.”

Source: RevenueBase Database · checked Sep 17, 2026
20Strong evidenceOmaha, NE, United StatesHQ checked Sep 17, 20261-106 contacts →

Strong evidence

“Bot Image was created by the founders after collective decades of experience in radiological practice, research, and medical device development to improve radiological outcomes.”

Source: RevenueBase Database · checked Sep 17, 2026
21Partial evidenceNew York, NY, United StatesHQ checked Sep 17, 202611-505 contacts →

Partial evidence

“A healthcare software company developing artificial intelligence (AI)-powered solutions, RADLogics provides machine learning image analysis solutions to improve radiologists'…”

Source: RevenueBase Database · checked Sep 17, 2026
22Partial evidenceWillmington, United StatesHQ checked Sep 17, 202611-505 contacts →

Partial evidence

“High-end data annotations services for all major dataset types and industries.”

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 17, 202611-504 contacts →

Indirect evidence

“Elevate your vehicle’s perception machine learning with LabelAI.”

Source: RevenueBase Database · checked Sep 17, 2026
24Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 17, 20261-104 contacts →

Partial evidence

“Hura Imaging is a medical imaging software company focusing on AI innovations for imaging guided treatment.”

Source: RevenueBase Database · checked Sep 17, 2026
25Strong evidenceHouston, TX, United StatesHQ checked Sep 17, 202611-502 contacts →

Strong evidence

“We provide a SaaS platform that enables physicians and researchers to train their own medical image analysis applications and classifiers using easy-to-use point and click…”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 46 medical image annotation companies based in the United States

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Medical image annotation companies based in the United States at a glance

As of Sep 17, 2026
30.6%Verified-email coverage
39.4Average contacts per company
11-50Median size (employees)
13.0%Largest-city concentration · Boston
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
19
51-200
9
201-500
1
501-1,000
3

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 46 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 medical image annotation 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 the United States whose own description of what they do matches “medical image annotation 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 medical image annotation 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 medical image annotation companies, 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, 554 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 17, 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.

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 medical image annotation 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 medical image annotation companies are there based in the United States?

RevenueBase identified 46 medical image annotation companies 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?

Capestart, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most medical image annotation companies?

Boston leads with 6 headquartered companies, followed by New York (5) and Los Angeles (4).

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 554 verified decision-maker contacts tracked across these 46 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 17, 2026.

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Related lists

Medical image annotation companies by geography

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.