Company lists · Data refreshed September 2026
Top 25 Medical appointment setting call centers worldwide
RevenueBase identified 1,067 medical appointment setting call centers worldwide as of September 2026 and tracks 22,524 professional contacts across them, including 6,010 with verified work emails. The United States is the largest market and London the largest hub.
This list covers medical appointment setting call centers worldwide, 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 28, 2026. Country and city lists for medical appointment setting call centers follow the table.
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.
The 25 largest medical appointment setting call centers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,984 contacts → | ||||
Partial evidence “Parallon leverages extensive expertise across a broad portfolio of revenue cycle, contact center, and clinical and administrative shared services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,676 contacts → | ||||
Indirect evidence “Phreesia was founded in 2005 to help patients take an active role in their care.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 555 contacts → | ||||
Indirect evidence “CCD is now part of GeBBS Healthcare Solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 442 contacts → | ||||
Indirect evidence “RelateCare is a patient engagement solutions organization that specializes in patient access and clinical communication solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 428 contacts → | ||||
Strong evidence “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 307 contacts → | ||||
Strong evidence “TeleDirect provides 24/7 U.S-based call center and answering services for organizations that cannot afford to miss important calls.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 250 contacts → | ||||
Indirect evidence “At Relatient we’re on a mission to make access to healthcare simpler.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 240 contacts → | ||||
Partial evidence “Somos un Contact Center especializado en salud, protección y bienestar de las personas, atendido por personal administrativos especializado, médicos, enfermeras, psicólogos, Tens…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 239 contacts → | ||||
Indirect evidence “Response provides smart outsourcing solutions that combine high-performing talent, operational excellence, scalable talent, and technology-enabled service delivery.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 224 contacts → | ||||
Indirect evidence “Staffingly, Inc.| 🤝 Your Partner in Healthcare Outsourcing We specialize in healthcare outsourcing services to address staff shortages and revenue losses.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 199 contacts → | ||||
Strong evidence “Ceequence is an ISO 27001 company that operates a 250-seat call center in Chennai, India, with state-of-the-art technology and experienced customer service professionals for…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 184 contacts → | ||||
Indirect evidence “Hospital Sao Mateus is a hospital & health care company based out of Av Santos Dumont, 5633, Fortaleza, Ce, Brazil.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 162 contacts → | ||||
Indirect evidence “We must work hard to achieve our goals, right?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 127 contacts → | ||||
Indirect evidence “בזק און ליין היא חברה בבעלות מלאה של בזק והיא מתמחה, מאז הווסדה בשנת 2001, בהקמה, ניהול ותפעול של מוקדים טלפוניים במגוון תחומים ועולמות תוכן:* מוקדי שירות ומידע * מוקדי מכירות…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 107 contacts → | ||||
Strong evidence “Sequence Health brings decades of dedicated healthcare expertise, offering full-service medical contact center solutions designed to adapt to the unique needs of any healthcare…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 102 contacts → | ||||
Partial evidence “Provide personalized care to all of your patients by partnering with our patient contact center, solely focused on serving healthcare.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 93 contacts → | ||||
Strong evidence “A Ivox é uma empresa de Call Center mas que vende mais do que isso, seu conceito é a entrega de SOLUÇÕES DE ATENDIMENTO, para o cliente que precisa de eficiência através de: •…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 80 contacts → | ||||
Strong evidence “AXION Contact is a fully customizable State of the Art call center.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 80 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 76 contacts → | ||||
Strong evidence “Access Point is a leading provider of healthcare-focused call center and telehealth solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence “HMCC: Zorgcommunicatie op afstand – voor apotheken, huisartsen én klinieken HMCC is geen standaard callcenter.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 71 contacts → | ||||
Indirect evidence “Nossos Serviços:*Gestão de contratos coletivos por adesão, Individual, PME e PJ.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 69 contacts → | ||||
Partial evidence “SENA Health is a physician-led company that partners with health systems, medical groups, and employers to bring innovative solutions to the forefront of patient access.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Partial evidence “Dexcomm began in 1954 helping businesses and medical offices provide 24/7 access to customers and patients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 67 contacts → | ||||
Partial evidence “BerylHealth, a Stericycle Communication Solutions company, is a premium provider of healthcare contact center services, aims to improve the patient experience through…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: medical appointment setting call centers. 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 medical appointment setting call centers.
- Partial evidence
- Its own public description names part of medical appointment setting call centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name medical appointment setting call centers. 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 1,067 medical appointment setting call centers worldwide
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Medical appointment setting call centers worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 appointment setting call centers, 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.
- Coverage
- Every country. Country and city lists for medical appointment setting call centers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “medical appointment setting call centers”. 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 appointment setting call centers), 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 appointment setting call centers, and records with no verified work email.
- 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, 6,010 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 28, 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.
Medical appointment setting call centers by location
4 lists · largest firstEvery Medical appointment setting call centers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 appointment setting call centers, 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 appointment setting call centers are there worldwide?
RevenueBase identified 1,067 medical appointment setting call centers worldwide 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?
Parallon, headquartered in Nashville, tops this list with the largest team on record.
Which country has the most medical appointment setting call centers?
The United States leads with 297 companies, followed by France (87) and the United Kingdom (70). Every medical appointment setting call centers list by country and city is linked on this page.
Which city has the most medical appointment setting call centers?
London leads with 17 headquartered companies, followed by Marrakech (11) and New York (11).
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 6,010 verified decision-maker contacts tracked across these 1,067 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 28, 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.