Company lists · Data refreshed September 2026

Top 25 Cardiac diagnostic equipment companies based in the United States

RevenueBase identified 234 cardiac diagnostic equipment companies headquartered in the United States as of September 2026 and tracks 14,704 professional contacts across them, including 5,420 with verified work emails. Miami is the largest hub.

This list covers cardiac diagnostic equipment 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 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
234Companies
14,704Contacts tracked
5,420Verified emails
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The 25 largest cardiac diagnostic equipment companies based in the United States

Ranked by team size
Top 25 of 234 cardiac diagnostic equipment companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cardiac diagnostic equipment 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 evidenceMa, United StatesHQ checked Sep 19, 20265,001-10,0005,140 contacts →

Indirect evidence

“At ZOLL®, we’re passionate about improving patient outcomes and helping save lives.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 20261,001-5,0001,754 contacts →

Indirect evidence

“iRhythm is a leading digital health care company that creates trusted solutions that detect, predict, and prevent disease.”

Source: RevenueBase Database · checked Sep 19, 2026
3Strong evidenceSnoqualmie, WA, United StatesHQ checked Sep 19, 20261,001-5,000781 contacts →

Strong evidence

“Spacelabs Healthcare is solely dedicated to developing patient monitoring and diagnostic cardiology technologies and services that empower providers to deliver exceptional patient…”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceIrvine, CA, United StatesHQ checked Sep 19, 2026201-500540 contacts →

Indirect evidence

“Different Thinking for Better Healthcare Nihon Kohden America is a global leader and fast-growing manufacturer of instrumentation for Patient Monitoring, Sleep Assessment…”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceCharlotte, NC, United StatesHQ checked Sep 19, 2026n/a531 contacts →

Partial evidence

“Started in Charlotte, NC in 1998, Transtate is a leader in providing expertly reconditioned Cardiac Cath Labs and Interventional Radiology Suites at a fraction of the cost of…”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceEden Prairie, MN, United StatesHQ checked Sep 19, 2026201-500289 contacts →

Indirect evidence

“ACIST Medical Systems, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 19, 20261,001-5,000289 contacts →

Indirect evidence

“Through its multi-modality platform, Volcano Corporation is the global leader in intravascular imaging for coronary and peripheral applications, and physiology.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceMountain View, CA, United StatesHQ checked Sep 19, 202651-200189 contacts →

Indirect evidence

“AliveCor, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
9Strong evidenceMelbourne, FL, United StatesHQ checked Sep 19, 202651-200157 contacts →

Strong evidence

“ReactDx (React Diagnostics) is a leading innovator in the cardiac telemedicine and home sleep testing industries.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceEagan, MN, United StatesHQ checked Sep 19, 202651-200152 contacts →

Partial evidence

“Anteris® Technologies is a global healthcare company dedicated to revolutionizing cardiac care.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceMalvern, PA, United StatesHQ checked Sep 19, 20261,001-5,000142 contacts →

Indirect evidence

“Thank you for visiting the BioTelemetry, a Philips company.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceMt. Laurel, NJ, United StatesHQ checked Sep 19, 2026201-500119 contacts →

Partial evidence

“RhythMedix is a fully integrated cardiac monitoring company with in-house device manufacturing, software development, and U.S-based monitoring services.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceMilwaukee, WI, United StatesHQ checked Sep 19, 2026201-500109 contacts →

Indirect evidence

“For over 30 years, Mortara Instrument, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceBraintree, MA, United StatesHQ checked Sep 19, 202651-200108 contacts →

Partial evidence

“Founded in 2009, PrepMD stands at the forefront of cardiac healthcare solutions, renowned for blending clinical expertise with technological innovation.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceRedmond, WA, United StatesHQ checked Sep 19, 202611-5080 contacts →

Indirect evidence

“Fukuda Denshi’s innovative technologies always have a strong impact around the world with our Electrocardiographs, Patient Monitoring Systems, and other medical engineering…”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 19, 202651-20075 contacts →

Indirect evidence

“Semler Scientific, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceChicago, United StatesHQ checked Sep 19, 20261,001-5,00075 contacts →

Indirect evidence

“Contec Medical Systems Co, Ltd.(hereinafter referred to as CONTEC) is a high-tech company which focuses on research, manufacture and distribution of medical devices since 1996…”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceChicago, IL, United StatesHQ checked Sep 19, 202651-20069 contacts →

Indirect evidence

“Prolaio, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceCarlsbad, CA, United StatesHQ checked Sep 19, 202651-20068 contacts →

Indirect evidence

“Acutus Medical is a dynamic arrhythmia care company focused on developing distinct, innovative technologies that provide physicians and patients with improved results.”

Source: RevenueBase Database · checked Sep 19, 2026
20Partial evidenceSt. Paul, MN, United StatesHQ checked Sep 19, 202651-20055 contacts →

Partial evidence

“Rhythm Express is at the forefront of cardiac monitoring technology, uniting compassionate care with innovative solutions to improve the quality of life for cardiac patients.”

Source: RevenueBase Database · checked Sep 19, 2026
21Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 202651-20054 contacts →

Partial evidence

“Powerful Medical and its flagship product, PMcardio®, use artificial intelligence to empower clinicians to accurately diagnose cardiovascular diseases and treat cardiac patients…”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceBellevue, WA, United StatesHQ checked Sep 19, 202611-5051 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
23Partial evidenceJackson, TN, United StatesHQ checked Sep 19, 202611-5050 contacts →

Partial evidence

“Master Medical Equipment is a proud distributor of Professional Defibrillators, Monitors, EKG/ECGs, Ventilators, ESUs, Pumps, and Sensors.”

Source: RevenueBase Database · checked Sep 19, 2026
24Partial evidenceSt Clair Shores, MI, United StatesHQ checked Sep 19, 202611-5044 contacts →

Partial evidence

“Eastlake Cardiovascular Assoc is a medical practice company based out of 24211 Little Mack Ave, St Clair Shores, Michigan, United States.”

Source: RevenueBase Database · checked Sep 19, 2026
25Indirect evidenceBethesda, MD, United StatesHQ checked Sep 19, 202611-5044 contacts →

Indirect evidence

“HealthCube ensures that accurate diagnosis is within easy and convenient reach of billions of people in both developed and developing economies.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 234 cardiac diagnostic equipment companies based in the United States

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Cardiac diagnostic equipment companies based in the United States at a glance

As of Sep 19, 2026
36.9%Verified-email coverage
62.8Average contacts per company
11-50Median size (employees)
3.8%Largest-city concentration · Miami
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
88
51-200
36
201-500
7
1,001-5,000
10
5,001-10,000
1
10001+
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 234 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 cardiac diagnostic equipment 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 “cardiac diagnostic equipment 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 cardiac diagnostic equipment 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 cardiac diagnostic equipment 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, 5,420 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.

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 cardiac diagnostic equipment 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 cardiac diagnostic equipment companies are there based in the United States?

RevenueBase identified 234 cardiac diagnostic equipment 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?

Zoll Medical Corporation, headquartered in Chelmsford, tops this list with the largest team on record.

Which city has the most cardiac diagnostic equipment companies?

Miami leads with 9 headquartered companies, followed by Houston (7) and New York (7).

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 5,420 verified decision-maker contacts tracked across these 234 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.

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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.