Company lists · Data refreshed September 2026

Top 25 Appointment scheduling outsourcing companies worldwide

RevenueBase identified 1,902 company matches for appointment scheduling outsourcing companies worldwide as of September 2026 and tracks 11,463 professional contacts across them, including 1,593 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for appointment scheduling outsourcing companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026. Country and city lists for appointment scheduling outsourcing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
1,902Companies
11,463Contacts tracked
1,593Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest appointment scheduling outsourcing companies worldwide

Ranked by team size
Top 25 of 1,902 company matches for appointment scheduling outsourcing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 27, 20261,001-5,000411 contacts →

Exact match

“Teem is building the hybrid workforce for healthcare practices, connecting providers with qualified, reliable, English-proficient virtual assistants for front desk, scribing…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchDumaguete, PhilippinesHQ recorded Sep 27, 2026201-500310 contacts →

Exact match

“Founded in 2008, SOPHI is an outsourcing center based in the Philippines.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 2026201-500250 contacts →

Exact match

“At Relatient we’re on a mission to make access to healthcare simpler.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchPiscataway, NJ, United StatesHQ recorded Sep 27, 2026501-1,000224 contacts →

Exact match

“Staffingly, Inc.| 🤝 Your Partner in Healthcare Outsourcing We specialize in healthcare outsourcing services to address staff shortages and revenue losses.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchColumbia, MD, United StatesHQ recorded Sep 27, 2026201-500196 contacts →

Exact match

“Founded in 1987, Capitol Concierge set out to transform the concierge industry-and we did just that.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchFortaleza, BrazilHQ recorded Sep 27, 202651-200184 contacts →

Exact match

“Hospital Sao Mateus is a hospital & health care company based out of Av Santos Dumont, 5633, Fortaleza, Ce, Brazil.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchOverland Park, KS, United StatesHQ recorded Sep 27, 2026501-1,000183 contacts →

Exact match

“CSS provides a critical backbone service to real estate agents in markets across the country.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchLas Condes, ChileHQ recorded Sep 27, 202651-200176 contacts →

Exact match

“AgendaPro es la plataforma líder en Latinoamérica para el agendamiento, gestión, pagos y crecimiento de negocios de belleza, bienestar y salud.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchİstanbul, TürkiyeHQ recorded Sep 27, 202651-200145 contacts →

Exact match

“DoktorTakvimi is Turkey’s number 1 online portal for booking appointments with medical professionals.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchCuritiba, BrazilHQ recorded Sep 27, 202651-200120 contacts →

Exact match

“O Grupo HelpMed Saúde surgiu em 2015 com o objetivo de fazer a gestão de escalas médicas com excelência, fazendo a gestão de equipes multidisciplinares e intermediando o…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 2026201-500107 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchCincinnati, OH, United StatesHQ recorded Sep 27, 2026201-500102 contacts →

Exact match

“Provide personalized care to all of your patients by partnering with our patient contact center, solely focused on serving healthcare.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchNicosia, CyprusHQ recorded Sep 27, 2026201-50094 contacts →

Exact match

“YCLIENTS is an online booking software and all-in-one automation platform for service-based businesses: Book appointments online, set and manage employee schedules easily, reduce…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchMandaue City, PhilippinesHQ recorded Sep 27, 2026501-1,00078 contacts →

Exact match

“Grow your business with Medical Staffing and Virtual Assistant Solutions Complete back-office outsourcing service tailored to your healthcare business needs”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchCharguia Ii, TunisiaHQ recorded Sep 27, 202651-20069 contacts →

Exact match

“Depuis 2011, Tricom propose des solutions sur mesure en externalisation pour accompagner les entreprises dans leur croissance et améliorer leur relation client.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchMunich, GermanyHQ recorded Sep 27, 202651-20064 contacts →

Exact match

“At TIMIFY, we empower businesses with cutting-edge appointment booking and resource scheduling solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchStamford, CT, United StatesHQ recorded Sep 27, 202651-20062 contacts →

Exact match

“ReferWell is a healthcare technology company on a mission to get people to the doctor.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchSheridan, WY, United StatesHQ recorded Sep 27, 2026201-50061 contacts →

Exact match

“Seasoned appointment setters ready to fill your pipeline with verified and qualified prospects.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchMedellín, ColombiaHQ recorded Sep 27, 2026501-1,00061 contacts →

Exact match

“At Telemed, we help healthcare providers in the U.S.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 202651-20057 contacts →

Exact match

“SUMO is a customer engagement platform that includes online Appointment, Event, and Field Sales scheduling, built fully native on Salesforce.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchStamford, CT, United StatesHQ recorded Sep 27, 202651-20056 contacts →

Exact match

“STATLINX’s medical call center services streamline patient communication and practice operations through a HIPAA‑compliant contact center that integrates directly with Epic and…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchMesa, AZ, United StatesHQ recorded Sep 27, 202611-5056 contacts →

Exact match

“Modern Receptionist is a small group of savvy and sophisticated receptionists that make life easier!”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchOrlando, FL, United StatesHQ recorded Sep 27, 202611-5054 contacts →

Exact match

“A young & dynamic company set up by medical professionals to provide back-office services for small and medium health care practices in the USA.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchMedellin, ColombiaHQ recorded Sep 27, 202611-5052 contacts →

Exact match

“Automate appointment scheduling, confirmations, and bilingual patient communication for clinics in the U.S.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchSantiago, ChileHQ recorded Sep 27, 2026n/a47 contacts →

Exact match

“En Cero ayudamos a que Hospitales y Clínicas atiendan a más pacientes y pierdan menos horas.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 1,902 appointment scheduling outsourcing companies worldwide

See the full list, filter by size, metro and specialty, and access 1,593 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Appointment scheduling outsourcing companies worldwide at a glance

As of Sep 27, 2026
13.9%Verified-email coverage
6.0Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
1,269
11-50
441
51-200
132
201-500
29
501-1,000
9
1,001-5,000
9

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for appointment scheduling outsourcing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “appointment scheduling outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,593 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Appointment scheduling outsourcing companies by location

8 lists · largest first

Every Appointment scheduling outsourcing companies 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “appointment scheduling outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many appointment scheduling outsourcing companies are there worldwide?

RevenueBase identified 1,902 company matches for appointment scheduling outsourcing companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

TEEM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most appointment scheduling outsourcing companies?

The United States leads with 354 companies, followed by France (150) and Brazil (90). Every appointment scheduling outsourcing companies list by country and city is linked on this page.

Which city has the most appointment scheduling outsourcing companies?

London leads with 29 company records, followed by Paris (23) and New York (19).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,593 professional contacts with verified work emails tracked across these 1,902 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,902 appointment scheduling outsourcing companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.