Company lists · Data refreshed September 2026

Top 25 Healthcare customer service outsourcing companies worldwide

Name: Healthcare customer service outsourcing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 5,429 companies tracked

RevenueBase identified 5,429 healthcare customer service outsourcing companies worldwide as of September 2026 and tracks 311,483 professional contacts across them, including 60,507 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers healthcare customer service outsourcing companies 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 healthcare customer service outsourcing companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

5,429Companies

311,483Contacts tracked

60,507Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest healthcare customer service outsourcing companies worldwide

Ranked by team size

Top 25 of 5,429 healthcare customer service outsourcing companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to healthcare customer service outsourcing 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	OPTUM	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 28, 2026	10001+	78,937 contacts →
	Indirect evidence “We’re evolving health care so everyone can have the opportunity to live their healthiest life.” Source: RevenueBase Database · checked Sep 28, 2026
2	Ienergizer	Strong evidence	Noida, IndiaHQ checked Sep 28, 2026	10001+	14,745 contacts →
	Strong evidence “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Source: RevenueBase Database · checked Sep 28, 2026
3	Sagility	Partial evidence	Westminster, CO, United StatesHQ checked Sep 28, 2026	10001+	9,366 contacts →
	Partial evidence “Sagility is a U.S-based, tech-enabled healthcare business process management company that supports payers, providers, and their partners to deliver best-in-class operations…” Source: RevenueBase Database · checked Sep 28, 2026
4	Parallon	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	10001+	5,984 contacts →
	Indirect 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, 2026
5	Everise	Partial evidence	Plantation, FL, United StatesHQ checked Sep 28, 2026	10001+	5,863 contacts →
	Partial evidence “Everise delivers happiness to millions of customers around the world.” Source: RevenueBase Database · checked Sep 28, 2026
6	Aramark Healthcare	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	10001+	4,136 contacts →
	Partial evidence “The healthcare industry is predicted to undergo more dynamic change in the next 20 years than it has in the past 100 years.” Source: RevenueBase Database · checked Sep 28, 2026
7	Raya CX	Partial evidence	Giza, EgyptHQ checked Sep 28, 2026	5,001-10,000	3,989 contacts →
	Partial evidence “RAYA Customer Experience provides next-generation BPO and customer experience management on behalf of clients across various industries.” Source: RevenueBase Database · checked Sep 28, 2026
8	GSS Global Sales Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	10001+	3,716 contacts →
	Indirect evidence “is a tech company specialized in providing, and for.” Source: RevenueBase Database · checked Sep 28, 2026
9	TSI	Strong evidence	Fort Washington, WA, United StatesHQ checked Sep 28, 2026	10001+	3,677 contacts →
	Strong evidence “Transworld Systems Inc.(TSI) stands as the leading tech-driven provider in Accounts Receivable Management (ARM), Healthcare Revenue Cycle Management (RCM), Customer Experience…” Source: RevenueBase Database · checked Sep 28, 2026
10	Teleperformance Global Services	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1,001-5,000	3,346 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
11	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,774 contacts →
	Indirect evidence “Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Source: RevenueBase Database · checked Sep 28, 2026
12	Inspiro	Strong evidence	Makati City Manila, PhilippinesHQ checked Sep 28, 2026	10001+	2,482 contacts →
	Strong evidence “A global CX outsourcing leader, Inspiro empowers smart, secure, seamless, scalable, and satisfying customer experience (CX) across a network of BPO and customer champions in 100…” Source: RevenueBase Database · checked Sep 28, 2026
13	Webhelp Onelink	Partial evidence	Guatemala, United StatesHQ checked Sep 28, 2026	10001+	2,245 contacts →
	Partial evidence “OneLink is the premier partner in outsourced omnichannel customer experience services.” Source: RevenueBase Database · checked Sep 28, 2026
14	CAT Technologies Argentina	Strong evidence	Buenos Aires, ArgentinaHQ checked Sep 28, 2026	1,001-5,000	2,221 contacts →
	Strong evidence “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Source: RevenueBase Database · checked Sep 28, 2026
15	Allied Global	Indirect evidence	GuatemalaHQ checked Sep 28, 2026	5,001-10,000	1,979 contacts →
	Indirect evidence “Regardless of your Company’s size (from Start-ups to Fortune 500), business vertical or service requirements, we act as a seamless extension of your team to help you grow, and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Modivcare	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	10001+	1,926 contacts →
	Partial evidence “Modivcare is a technology-enabled healthcare services company, which provides a suite of integrated supportive care solutions for public and private payors and their patients.” Source: RevenueBase Database · checked Sep 28, 2026
17	Aquity Solutions	Indirect evidence	Cary, NC, United StatesHQ checked Sep 28, 2026	10001+	1,856 contacts →
	Indirect evidence “IKS Health is on a mission to enable the efficient delivery of high quality care through a combination of leading edge technology and human expertise.” Source: RevenueBase Database · checked Sep 28, 2026
18	Km2 Solutions	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,741 contacts →
	Partial evidence “Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Source: RevenueBase Database · checked Sep 28, 2026
19	Support Services Group	Partial evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Partial evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
20	Phreesia	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	1,001-5,000	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, 2026
21	Carenet Health	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,606 contacts →
	Partial evidence “Carenet Health is committed to delivering the business of healthcare through leading-edge technology, unmatched perspective and insights, and operational excellence to help…” Source: RevenueBase Database · checked Sep 28, 2026
22	Ascent Business Solutions	Partial evidence	Nagpur, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,554 contacts →
	Partial evidence “Rising cost of healthcare, increased adoption of technology, prevalence of quality- and performance-based reimbursement models, evolving physician-hospital -patient dynamics are…” Source: RevenueBase Database · checked Sep 28, 2026
23	Eclat Health Solutions INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,416 contacts →
	Indirect evidence “ECLAT Health Solutions (ECLAT) is headquartered minutes away from Washington, DC.” Source: RevenueBase Database · checked Sep 28, 2026
24	Palmetto GBA	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,350 contacts →
	Indirect evidence “You can’t reach new heights of performance unless you’re willing to invest in others.” Source: RevenueBase Database · checked Sep 28, 2026
25	EXL Health	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	1,310 contacts →
	Indirect evidence “EXL Health combines deep domain expertise with analytic insights and technology-enabled services to transform how care is delivered, managed, and paid.” Source: RevenueBase Database · checked Sep 28, 2026

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: healthcare customer service outsourcing companies. 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 healthcare customer service outsourcing companies.
Partial evidence: Its own public description names part of healthcare customer service outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name healthcare customer service outsourcing companies. 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 5,429 healthcare customer service outsourcing companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 60,507 reachable decision-makers.

Free signup · no credit card

View the full list →

Healthcare customer service outsourcing companies worldwide at a glance

As of Sep 28, 2026

19.4%Verified-email coverage

57.4Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Lahore

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,466

11-50

1,829

51-200

1,238

201-500

465

501-1,000

203

1,001-5,000

154

5,001-10,000

10001+

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 healthcare customer service outsourcing 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.
Coverage: Every country. Country and city lists for healthcare customer service outsourcing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “healthcare customer service outsourcing 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 healthcare customer service outsourcing 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 healthcare customer service outsourcing companies, 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, 60,507 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.

Healthcare customer service outsourcing companies by location

26 lists · largest first

Every Healthcare customer service outsourcing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 healthcare customer service outsourcing 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 healthcare customer service outsourcing companies are there worldwide?

RevenueBase identified 5,429 healthcare customer service outsourcing companies 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?

OPTUM, headquartered in Eden Prairie, tops this list with the largest team on record.

Which country has the most healthcare customer service outsourcing companies?

The United States leads with 1,953 companies, followed by India (633) and Pakistan (276). Every healthcare customer service outsourcing companies list by country and city is linked on this page.

Which city has the most healthcare customer service outsourcing companies?

Lahore leads with 102 headquartered companies, followed by New York (53) and London (48).

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 60,507 verified decision-maker contacts tracked across these 5,429 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.

Ready to reach these companies? Verified emails and direct dials for all 5,429 healthcare customer service outsourcing companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.