Company lists · Data refreshed September 2026

Top 25 Customer expansion consulting firms based in the United States

Name: Customer expansion consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 12,066 companies tracked

RevenueBase identified 12,066 customer expansion consulting firms headquartered in the United States as of September 2026 and tracks 84,816 professional contacts across them, including 26,249 with verified work emails. New York is the largest hub.

This list covers customer expansion consulting firms 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 28, 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 28, 2026 86% judged on-target in blind review

12,066Companies

84,816Contacts tracked

26,249Verified emails

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The 25 largest customer expansion consulting firms based in the United States

Ranked by team size

Top 25 of 12,066 customer expansion consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer expansion consulting firms: 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	Slalom	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	10001+	10,032 contacts →
	Partial evidence “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Source: RevenueBase Database · checked Sep 28, 2026
2	Protiviti	Partial evidence	Menlo Park, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	8,779 contacts →
	Partial evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 28, 2026
3	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,330 contacts →
	Indirect evidence “For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.” Source: RevenueBase Database · checked Sep 28, 2026
4	MCA	Partial evidence	Westport, CT, United StatesHQ checked Sep 28, 2026	n/a	1,650 contacts →
	Partial evidence “MCAworks is a strategic marketing consulting firm passionately dedicated to helping our clients accelerate and sustain business growth.” Source: RevenueBase Database · checked Sep 28, 2026
5	W3global	Partial evidence	Frisco, TX, United StatesHQ checked Sep 28, 2026	501-1,000	1,149 contacts →
	Partial evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 28, 2026
6	Clark Schaefer Hackett	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 28, 2026	501-1,000	683 contacts →
	Indirect evidence “Clark Schaefer Hackett is more than an accounting and advisory firm; we’re striving to be your most valued advisor.” Source: RevenueBase Database · checked Sep 28, 2026
7	Prophet	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	501-1,000	661 contacts →
	Partial evidence “Prophet is the Uncommon Growth Company-accelerating impact for business and marketing leaders through consulting, experience, and creative services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Smart Circle International	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 28, 2026	51-200	426 contacts →
	Partial evidence “At Smart Circle, our goal is to provide our clients with access to customized face-to- face marketing and sales solutions by connecting our clients with a dynamic network of…” Source: RevenueBase Database · checked Sep 28, 2026
9	EBQ	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	201-500	377 contacts →
	Indirect evidence “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: RevenueBase Database · checked Sep 28, 2026
10	YHB Cpas & Consultants	Indirect evidence	Winchester, VA, United StatesHQ checked Sep 28, 2026	201-500	376 contacts →
	Indirect evidence “We Are All About You That is why we take a holistic approach to assisting clients with growing, managing, and protecting their hard work.” Source: RevenueBase Database · checked Sep 28, 2026
11	Simplus	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 28, 2026	501-1,000	374 contacts →
	Indirect evidence “We will meet clients where they are on their Salesforce journey, accelerating time to value through our advisory-led, industry-focused, and partner-aligned approach to…” Source: RevenueBase Database · checked Sep 28, 2026
12	Prescouter, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	201-500	325 contacts →
	Partial evidence “PreScouter is a strategy consulting firm supporting innovation-minded clients with challenges related to strategy, science, technology, and growth.” Source: RevenueBase Database · checked Sep 28, 2026
13	Drummond Advisors	Partial evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	201-500	322 contacts →
	Partial evidence “Drummond Advisors provides global consulting services to companies focusing on accounting, tax, legal and business development.” Source: RevenueBase Database · checked Sep 28, 2026
14	Iquasar LLC	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 28, 2026	201-500	312 contacts →
	Indirect evidence “Based in Sterling, Virginia, iQuasar LLC, with over 20 years of experience, we help small and medium businesses grow in the federal marketplace through Proposal Development…” Source: RevenueBase Database · checked Sep 28, 2026
15	Atcs INC	Partial evidence	Montvale, NJ, United StatesHQ checked Sep 28, 2026	501-1,000	275 contacts →
	Partial evidence “ATCS is a Technology Consulting firm providing services in the area of Enterprise IT, Digital Transformation, Data Analytics and Marketing Insights.” Source: RevenueBase Database · checked Sep 28, 2026
16	Insight2profit	Indirect evidence	Beachwood, OH, United StatesHQ checked Sep 28, 2026	201-500	273 contacts →
	Indirect evidence “INSIGHT2PROFIT, a DFW Capital Partners portfolio company, accelerates profitable growth for leading organizations through integrated pricing and commercial excellence.” Source: RevenueBase Database · checked Sep 28, 2026
17	Sales Xceleration	Indirect evidence	Fishers, IN, United StatesHQ checked Sep 28, 2026	51-200	268 contacts →
	Indirect evidence “At Sales Xceleration, we help businesses accelerate revenue growth through our Certified Sales Operating Management System™ and the guidance of our Fractional Sales Leaders.” Source: RevenueBase Database · checked Sep 28, 2026
18	Expertcallers	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 28, 2026	501-1,000	264 contacts →
	Partial evidence “ExpertCallers (a division of Flatworld Solutions) is a global consulting and outsourcing company, with a wealth of experience in providing operational and strategic excellence to…” Source: RevenueBase Database · checked Sep 28, 2026
19	Love & Company	Indirect evidence	Frederick, MD, United StatesHQ checked Sep 28, 2026	n/a	249 contacts →
	Indirect evidence “Love & Company specializes in marketing, advertising, sales, and strategy for operators of senior housing.” Source: RevenueBase Database · checked Sep 28, 2026
20	Bridge Partners	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	201-500	247 contacts →
	Strong evidence “Bridge Partners is a people-focused, customer-driven consulting firm that helps organizations transform to drive revenue growth, adapt to change, and create customer value.” Source: RevenueBase Database · checked Sep 28, 2026
21	Medialink	Partial evidence	Beverly Hills, CA, United StatesHQ checked Sep 28, 2026	51-200	204 contacts →
	Partial evidence “MediaLink is the leading consulting firm serving the media and marketing industry’s C-suite.” Source: RevenueBase Database · checked Sep 28, 2026
22	Sales Focus INC	Indirect evidence	North Charleston, SC, United StatesHQ checked Sep 28, 2026	201-500	198 contacts →
	Indirect evidence “Sales Focus Inc.(SFI) pioneered the sales outsourcing industry in 1998.” Source: RevenueBase Database · checked Sep 28, 2026
23	Redcloud Consulting	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 28, 2026	201-500	188 contacts →
	Partial evidence “RedCloud is a business and technology consulting firm providing local companies with expert-level support for over two decades.” Source: RevenueBase Database · checked Sep 28, 2026
24	Affinity Development Group	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	201-500	183 contacts →
	Partial evidence “Affinity Development Group is a full-service consulting, marketing, operations and technology company located in San Diego, Calif.” Source: RevenueBase Database · checked Sep 28, 2026
25	Buxton	Partial evidence	Fort Worth, TX, United StatesHQ checked Sep 28, 2026	51-200	182 contacts →
	Partial evidence “Buxton is changing the way organizations compete and grow by providing tools and insights that put customers at the center of their decision-making strategies.” 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: customer expansion consulting firms. 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 customer expansion consulting firms.
Partial evidence: Its own public description names part of customer expansion consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer expansion consulting firms. 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 12,066 customer expansion consulting firms based in the United States

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Customer expansion consulting firms based in the United States at a glance

As of Sep 28, 2026

30.9%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

9,534

11-50

2,069

51-200

349

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 12,066 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 customer expansion consulting firms, 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 “customer expansion consulting firms”. 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 customer expansion consulting firms), 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 customer expansion consulting firms, 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, 26,249 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.

Customer expansion consulting firms by metro

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 customer expansion consulting firms, 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 customer expansion consulting firms are there based in the United States?

RevenueBase identified 12,066 customer expansion consulting firms 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?

Slalom, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most customer expansion consulting firms?

New York leads with 617 headquartered companies, followed by Chicago (290) and Atlanta (285).

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 26,249 verified decision-maker contacts tracked across these 12,066 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.