Company lists · Data refreshed September 2026

Top 25 Appointment confirmation call centers based in the United States

RevenueBase identified 106 company matches for appointment confirmation call centers associated with the United States as of September 2026 and tracks 3,375 professional contacts across them, including 406 with verified work emails. New York is the largest hub.

This list covers company matches for appointment confirmation call centers associated with the United States, 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.

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
106Companies
3,375Contacts tracked
406Verified emails
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The 25 largest appointment confirmation call centers based in the United States

Ranked by team size
Top 25 of 106 company matches for appointment confirmation call centers based in the United States, 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 matchHurst, TX, United StatesHQ recorded Sep 27, 202651-200428 contacts →

Exact match

“Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchBloomington, MN, United StatesHQ recorded Sep 27, 20261,001-5,000354 contacts →

Exact match

“For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchChelmsford, MA, United StatesHQ recorded Sep 27, 2026201-500291 contacts →

Exact match

“The market knows us as the leader in appointment setting.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchDetroit, MI, United StatesHQ recorded Sep 27, 20261,001-5,000247 contacts →

Exact match

“Rocket Connections is a sales and support platform specializing in contact center services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchDover, DE, United StatesHQ recorded Sep 27, 2026201-500209 contacts →

Exact match

“Belkins is the #1 ranked appointment-setting agency in the USA for 5 years in a row, driving results for businesses in 50+ industries across the globe.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchParsipany, NJ, United StatesHQ recorded Sep 27, 2026201-500199 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact 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
8Exact 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
9Exact matchDallas, TX, United StatesHQ recorded Sep 27, 202651-20093 contacts →

Exact match

“Mission: Become a world-class call center by focusing on professional communication, teamwork, and personal development.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact 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
11Exact 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
12Exact matchVirginia Beach, VA, United StatesHQ recorded Sep 27, 202651-20037 contacts →

Exact match

“You work hard to make your business a success.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchWalnut Creek, CA, United StatesHQ recorded Sep 27, 2026n/a36 contacts →

Exact match

“Since 2007, Reliable Receptionist has thrived by providing highly personalized, locally-based, live telephone reception to small business owners, helping them grow revenue and…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchEldersburg, MD, United StatesHQ recorded Sep 27, 202611-5020 contacts →

Exact match

“We offer professional answering service, order taking, web site answering, fulfillment, credit card authorization, technical support lines, dealer locate, help desk, call center…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchLake Success, NY, United StatesHQ recorded Sep 27, 202611-5020 contacts →

Exact match

“Discover the Benefits of a Personal Receptionist and National Toll-Free Number Acena is a New York based call center servicing all of North America.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchJeffersonville, IN, United StatesHQ recorded Sep 27, 202651-20018 contacts →

Exact match

“Formed in 2013, Unique Dental Scheduling helps dental practices grow and operate in the most efficient manner and stand out in a busy culture where patients expect more than…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchSan Diego, CA, United StatesHQ recorded Sep 27, 202611-5015 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 27, 202651-20014 contacts →

Exact match

“GVS provides call centers with real people to handle phone calls and scheduling needs.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchMesa, AZ, United StatesHQ recorded Sep 27, 202611-5012 contacts →

Exact match

“We Help Chiropractors, Doctors, & Dentists Increase Their Foot Traffic With Qualified Patients by Generating Phone Calls To Our Call Center Through Our PG System AI Technology to…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchBoiling Springs, SC, United StatesHQ recorded Sep 27, 20261-1011 contacts →

Exact match

“Who we are We are the ABSOLUTE best way to grow your business!”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchLos Angeles, CA, United StatesHQ recorded Sep 27, 202611-5011 contacts →

Exact match

“Answering365 is an Award-Winning, nationwide call center, located in Los Angeles, California.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchBeverly, United StatesHQ recorded Sep 27, 202651-2009 contacts →

Exact match

“Business and Professional Exchange, Inc.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchCoeur D'alene, ID, United StatesHQ recorded Sep 27, 202611-508 contacts →

Exact match

“Aptly Able helps phone-driven service businesses recover missed revenue and improve performance, without spending more on new leads.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchBrooklyn, United StatesHQ recorded Sep 27, 202611-507 contacts →

Exact match

“No-Show Clients are No-Pay Clients • Automated Appointment Reminders for Your Patients, Customers or Clients Quickly schedule client appointments with a smartphone, tablet, or…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchMinnetonka, MN, United StatesHQ recorded Sep 27, 202611-507 contacts →

Exact match

“Callworks will provide customer communications and call center services with the goal of making an appointment generated by internet lead, phone call or chat.”

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

Showing 25 of 106 appointment confirmation call centers based in the United States

See the full list, filter by size, metro and specialty, and access 406 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Appointment confirmation call centers based in the United States at a glance

As of Sep 27, 2026
12.0%Verified-email coverage
31.8Average contacts per company
11-50Median size (employees)
4.7%Largest-city concentration · New York
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
40
51-200
16
201-500
9
501-1,000
1
1,001-5,000
4

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 106 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “appointment confirmation call centers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 406 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.

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 confirmation call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many appointment confirmation call centers are there based in the United States?

RevenueBase identified 106 company matches for appointment confirmation call centers associated with the United States 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?

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

Which city has the most appointment confirmation call centers?

New York leads with 5 company records, followed by Los Angeles (3) and Atlanta (2).

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 406 professional contacts with verified work emails tracked across these 106 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.

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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 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.