Company lists · Data refreshed September 2026

Top 18 Cardiac pacemaker manufacturers based in the United States

RevenueBase identified 32 cardiac pacemaker manufacturers headquartered in the United States as of September 2026 and tracks 1,910 professional contacts across them, including 770 with verified work emails. Irvine is the largest hub.

This list covers cardiac pacemaker manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review
32Companies
1,910Contacts tracked
770Verified emails
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The 18 largest cardiac pacemaker manufacturers based in the United States

Ranked by team size
Top 18 of 32 cardiac pacemaker manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to cardiac pacemaker manufacturers: 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 evidenceLake Oswego, OR, United StatesHQ checked Sep 30, 2026201-500216 contacts →

Indirect evidence

“Micro Systems Engineering, Inc.(MSEI), with its main office in Lake Oswego, Oregon, is is a pioneer in developing innovative implantable medical device technologies and devices…”

Source: RevenueBase Database · checked Sep 30, 2026
2Partial evidenceDeerfield, WI, United StatesHQ checked Sep 30, 2026201-500208 contacts →

Partial evidence

“Cardiac Science is now part of the ZOLL® Medical Family.”

Source: RevenueBase Database · checked Sep 30, 2026
3Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 30, 202651-200136 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 30, 2026
4Partial evidenceMt. Laurel, NJ, United StatesHQ checked Sep 30, 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 30, 2026
5Indirect evidenceMilwaukee, WI, United StatesHQ checked Sep 30, 2026201-500109 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 30, 2026
6Partial evidenceMarlborough, MA, United StatesHQ checked Sep 30, 202651-20086 contacts →

Partial evidence

“At CardioFocus, we specialize in providing electrophysiologists with innovative and effective tools that bring new levels of precision and control to the treatment of complex…”

Source: RevenueBase Database · checked Sep 30, 2026
7Indirect evidenceRedmond, WA, United StatesHQ checked Sep 30, 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 30, 2026
8Partial evidenceJohns Creek, GA, United StatesHQ checked Sep 30, 202651-20078 contacts →

Partial evidence

“At Zywie, we’re redefining how cardiac data translates into clinical insight.”

Source: RevenueBase Database · checked Sep 30, 2026
9Indirect evidenceCarlsbad, CA, United StatesHQ checked Sep 30, 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 30, 2026
10Indirect evidenceBellevue, WA, United StatesHQ checked Sep 30, 202611-5051 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 30, 2026
11Partial evidenceSan Clemente, CA, United StatesHQ checked Sep 30, 202611-5029 contacts →

Partial evidence

“At AtaCor Medical, we envision a new world of cardiac rhythm management.”

Source: RevenueBase Database · checked Sep 30, 2026
12Partial evidenceTampa, FL, United StatesHQ checked Sep 30, 202611-5014 contacts →

Partial evidence

“Delivering cutting-edge cardiac medical devices to clinicians since 1994.”

Source: RevenueBase Database · checked Sep 30, 2026
13Indirect evidenceDenver, CO, United StatesHQ checked Sep 30, 202651-20013 contacts →

Indirect evidence

“A global leader, partner and resource for innovative medical devices and instrumentation.”

Source: RevenueBase Database · checked Sep 30, 2026
14Indirect evidenceBeaverton, OR, United StatesHQ checked Sep 30, 202611-509 contacts →

Indirect evidence

“VisCardia Inc is a privately held medical device company in Portland Oregon developing a novel chronic heart failure therapy.”

Source: RevenueBase Database · checked Sep 30, 2026
15Partial evidenceTampa, United StatesHQ checked Sep 30, 20261-109 contacts →

Partial evidence

“Cardiac Monitor”

Source: RevenueBase Database · checked Sep 30, 2026
16Partial evidenceWheat Ridge, CO, United StatesHQ checked Sep 30, 20261-108 contacts →

Partial evidence

“Fischer Medical Technologies designs, manufactures and markets leading edge medical systems in breast imaging, breast biopsy and electrophysiology stimulation.”

Source: RevenueBase Database · checked Sep 30, 2026
17Partial evidenceSt. Paul, MN, United StatesHQ checked Sep 30, 20261-106 contacts →

Partial evidence

“Calyan Technologies is an early-stage medical-technology company creating a novel approach to managing cardiac rhythm disorders.”

Source: RevenueBase Database · checked Sep 30, 2026
18Indirect evidenceMt. Olive, NJ, United StatesHQ checked Sep 30, 202611-503 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 30, 2026

Showing 18 of 32 cardiac pacemaker manufacturers based in the United States

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Cardiac pacemaker manufacturers based in the United States at a glance

As of Sep 30, 2026
40.3%Verified-email coverage
59.7Average contacts per company
11-50Median size (employees)
9.4%Largest-city concentration · Irvine
Sep 30, 2026Page data refreshed

Companies by employee count

1-10
4
11-50
15
51-200
7
201-500
4
1,001-5,000
2

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 32 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 pacemaker manufacturers, 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 pacemaker manufacturers”. 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 pacemaker manufacturers), 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 pacemaker manufacturers, 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, 770 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 30, 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 pacemaker manufacturers, 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 pacemaker manufacturers are there based in the United States?

RevenueBase identified 32 cardiac pacemaker manufacturers 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?

Micro Systems Engineering, INC, headquartered in Lake Oswego, tops this list with the largest team on record.

Which city has the most cardiac pacemaker manufacturers?

Irvine leads with 3 headquartered companies, followed by Sunnyvale (2) and Arlington (1).

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 770 verified decision-maker contacts tracked across these 32 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 30, 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.