Company lists · Data refreshed September 2026

Top 25 Change management consulting services based in New York, United States

Name: Change management consulting services based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 676 companies tracked

RevenueBase identified 676 change management consulting services headquartered in New York, United States as of September 2026 and tracks 22,232 professional contacts across them, including 10,885 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers change management consulting services headquartered in New York, 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 23, 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 23, 2026 86% judged on-target in blind review

676Companies

22,232Contacts tracked

10,885Verified emails

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The 25 largest change management consulting services based in New York, United States

Ranked by team size

Top 25 of 676 change management consulting services based in New York, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to change management consulting services: 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	Oliver Wyman	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,230 contacts →
	Indirect evidence “At Oliver Wyman, a Marsh business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their…” Source: RevenueBase Database · checked Sep 23, 2026
2	Strategy	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	5,082 contacts →
	Indirect evidence “From strategy to execution.” Source: RevenueBase Database · checked Sep 23, 2026
3	Alixpartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,583 contacts →
	Indirect evidence “For more than forty years, AlixPartners has helped businesses around the world respond quickly and decisively to their most critical challenges – circumstances as diverse as…” Source: RevenueBase Database · checked Sep 23, 2026
4	Porter Novelli	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	501-1,000	821 contacts →
	Partial evidence “Porter Novelli is the strategic communications company, fueled by innovation, empowering clients to do business better in an ever-changing world.” Source: RevenueBase Database · checked Sep 23, 2026
5	Bryant Park Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	191 contacts →
	Indirect evidence “We champion a culture of innovation to help our clients build the future of business.” Source: RevenueBase Database · checked Sep 23, 2026
6	Sypartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	170 contacts →
	Indirect evidence “SYPartners is a transformation consultancy that helps leaders improve organizational performance by aligning vision, activating strategy, and building cultures of competitive…” Source: RevenueBase Database · checked Sep 23, 2026
7	NEO Tangent Limited	Partial evidence	New York, United StatesHQ checked Sep 23, 2026	1,001-5,000	167 contacts →
	Partial evidence “We're a business process management organization that delivers professional services to our customers globally.” Source: RevenueBase Database · checked Sep 23, 2026
8	Collins	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	164 contacts →
	Indirect evidence “COLLINS is a transformation consultancy with offices in San Francisco and New York City.” Source: RevenueBase Database · checked Sep 23, 2026
9	Acquis Consulting Group	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	150 contacts →
	Strong evidence “Acquis is a different kind of management consulting firm.” Source: RevenueBase Database · checked Sep 23, 2026
10	Applied Value Group	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	124 contacts →
	Strong evidence “Founded in 1997 by Executive Chairman Bruce Grant and the late Jan Stenbeck, Applied Value Group is a leading global management consulting firm with decades of experience growing…” Source: RevenueBase Database · checked Sep 23, 2026
11	Tefen Management Consulting	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	122 contacts →
	Strong evidence “Tefen is an international management consulting firm, committed to driving organizations towards achieving performance excellence.” Source: RevenueBase Database · checked Sep 23, 2026
12	Vivaldi	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	102 contacts →
	Indirect evidence “Vivaldi is a global business reinvention firm comprised of growth strategists, innovators, visionary technologists, and disruptive creatives.” Source: RevenueBase Database · checked Sep 23, 2026
13	MESA	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	11-50	90 contacts →
	Indirect evidence “A radically efficient approach to work.” Source: RevenueBase Database · checked Sep 23, 2026
14	Total Deployment Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	76 contacts →
	Partial evidence “Our trained and certified US-based professionals provide intelligent, informed insight to manage IT change events – improving support for your end-users and reducing risk…” Source: RevenueBase Database · checked Sep 23, 2026
15	United Minds	Indirect evidence	New York, United StatesHQ checked Sep 23, 2026	51-200	68 contacts →
	Indirect evidence “We’re United Minds, a global consultancy of thinkers, doers and partners who genuinely care about supporting you-and your people-in whatever business challenge comes your way.” Source: RevenueBase Database · checked Sep 23, 2026
16	Mentora	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	63 contacts →
	Indirect evidence “Mentora Institute is a global leadership development and organizational transformation group headquartered in New York.” Source: RevenueBase Database · checked Sep 23, 2026
17	MOJO	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	56 contacts →
	Indirect evidence “We are a creative consultancy.” Source: RevenueBase Database · checked Sep 23, 2026
18	Daggerwing Group	Partial evidence	New York, United StatesHQ checked Sep 23, 2026	51-200	55 contacts →
	Partial evidence “Daggerwing Group is a Top-Ten rated global change consultancy*.” Source: RevenueBase Database · checked Sep 23, 2026
19	Curiousrubik	Indirect evidence	New York, United StatesHQ checked Sep 23, 2026	51-200	49 contacts →
	Indirect evidence “Curious Rubik is a multidisciplinary team of consultants and solution design experts.” Source: RevenueBase Database · checked Sep 23, 2026
20	Stradit	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	11-50	44 contacts →
	Indirect evidence “We follow a customer first approach and collaborate with our clients to identify what is important for their business.We understand the synergy between the journey and the…” Source: RevenueBase Database · checked Sep 23, 2026
21	Drum Associates	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	41 contacts →
	Indirect evidence “DRUM Associates With over 50 years of industry experience, DRUM has been a trusted end-to-end service provider from inception to delivery.” Source: RevenueBase Database · checked Sep 23, 2026
22	TLD Group The Leadership Development Group	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	n/a	34 contacts →
	Partial evidence “Who We Are: At The Leadership Development Group (TLD Group), we believe leadership is the transformative force that drives change and connects intention to execution.” Source: RevenueBase Database · checked Sep 23, 2026
23	MNK Group	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	29 contacts →
	Partial evidence “MNK Group is an independent business and technology consultancy, specializing in providing multifaceted organizations with Business Analysis, Project Management, and Strategy…” Source: RevenueBase Database · checked Sep 23, 2026
24	Virtual Consulting Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	11-50	27 contacts →
	Indirect evidence “Achieving Extraordinary Results with companies and clients worldwide through Scenario Planning, Executive Coaching, Corporate Governance and M&A.” Source: RevenueBase Database · checked Sep 23, 2026
25	Lumeri, An Ankura Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	11-50	26 contacts →
	Indirect evidence “In 2024, Lumeri joined Ankura.” Source: RevenueBase Database · checked Sep 23, 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: change management consulting services. 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 change management consulting services.
Partial evidence: Its own public description names part of change management consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name change management consulting services. 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 676 change management consulting services based in New York, United States

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Change management consulting services based in New York, United States at a glance

As of Sep 23, 2026

49.0%Verified-email coverage

32.9Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

496

11-50

121

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 676 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 change management consulting services, 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 New York, United States whose own description of what they do matches “change management consulting services”. 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 change management consulting services), 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 change management consulting services, and records with no verified work email. Companies headquartered outside New York 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, 10,885 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 23, 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.

Change management consulting services by metro in the United States

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 change management consulting services, 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 change management consulting services are there based in New York, United States?

RevenueBase identified 676 change management consulting services headquartered in New York, 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?

Oliver Wyman, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most change management consulting services?

New York leads the United States with 676 headquartered companies, followed by Atlanta (467) and Chicago (447).

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 10,885 verified decision-maker contacts tracked across these 676 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 23, 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.