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Company lists · Data refreshed September 2026

Top 25 Change management consultancies based in New York, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 896 companies tracked

RevenueBase identified 896 change management consultancies headquartered in New York, United States as of September 2026 and tracks 23,036 professional contacts across them, including 11,651 with verified work emails. New York is the largest hub.

This list covers change management consultancies 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
896Companies
23,036Contacts tracked
11,651Verified emails
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The 25 largest change management consultancies based in New York, United States

Ranked by team size
Top 25 of 896 change management consultancies 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 consultancies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1
Oliver Wyman
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 20265,001-10,0008,230 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 evidenceNew York, NY, United StatesHQ checked Sep 23, 20261,001-5,0005,082 contacts →

Indirect evidence

“From strategy to execution.”

Source: RevenueBase Database · checked Sep 23, 2026
3
Alixpartners
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 20261,001-5,0003,583 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
The Vertex Companies LLC
Partial evidenceNew York, NY, United StatesHQ checked Sep 23, 2026501-1,000765 contacts →

Partial evidence

“The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…”

Source: RevenueBase Database · checked Sep 23, 2026
5
Seargin
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 2026501-1,000276 contacts →

Indirect evidence

“Seargin was founded to close the gap between traditional advisory and hands-on delivery - combining strategic insight with deep expertise in ERP, AI and data.”

Source: RevenueBase Database · checked Sep 23, 2026
6
Bryant Park Consulting
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 2026201-500191 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
7
Sypartners
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-200170 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
8
NEO Tangent Limited
Partial evidenceNew York, United StatesHQ checked Sep 23, 20261,001-5,000167 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
9
Collins
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-200164 contacts →

Indirect evidence

“COLLINS is a transformation consultancy with offices in San Francisco and New York City.”

Source: RevenueBase Database · checked Sep 23, 2026
10
Acquis Consulting Group
Partial evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-200150 contacts →

Partial evidence

“Acquis is a different kind of management consulting firm.”

Source: RevenueBase Database · checked Sep 23, 2026
11
Tefen Management Consulting
Partial evidenceNew York, NY, United StatesHQ checked Sep 23, 2026201-500122 contacts →

Partial 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 evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-200102 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 evidenceNew York, NY, United StatesHQ checked Sep 23, 202611-5090 contacts →

Indirect evidence

“A radically efficient approach to work.”

Source: RevenueBase Database · checked Sep 23, 2026
14
Total Deployment Solutions
Partial evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-20076 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 evidenceNew York, United StatesHQ checked Sep 23, 202651-20068 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 evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-20063 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
JER HR Group
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202611-5061 contacts →

Indirect evidence

“JER HR Group helps great organizations to be their best.”

Source: RevenueBase Database · checked Sep 23, 2026
18
MOJO
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-20056 contacts →

Indirect evidence

“We are a creative consultancy.”

Source: RevenueBase Database · checked Sep 23, 2026
19
Daggerwing Group
Partial evidenceNew York, United StatesHQ checked Sep 23, 202651-20055 contacts →

Partial evidence

“Daggerwing Group is a Top-Ten rated global change consultancy*.”

Source: RevenueBase Database · checked Sep 23, 2026
20
DIA Associates
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-20053 contacts →

Indirect evidence

“At DIA Associates, we combine high-level, strategic recommendations with technical, tactical acumen to implement successful projects at scale.”

Source: RevenueBase Database · checked Sep 23, 2026
21
Curiousrubik
Indirect evidenceNew York, United StatesHQ checked Sep 23, 202651-20049 contacts →

Indirect evidence

“Curious Rubik is a multidisciplinary team of consultants and solution design experts.”

Source: RevenueBase Database · checked Sep 23, 2026
22
Stradit
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202611-5044 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
23
The Talent Business
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202611-5043 contacts →

Indirect evidence

“The Talent Business was founded on the principle that creativity is the most important human resource of all in business.”

Source: RevenueBase Database · checked Sep 23, 2026
24
Drum Associates
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 202651-20041 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
25
Your Other Half
Indirect evidenceNew York, NY, United StatesHQ checked Sep 23, 2026n/a39 contacts →

Indirect evidence

“Your Other Half isn’t your typical HR & recruiting firm.”

Source: RevenueBase Database · checked Sep 23, 2026

Showing 25 of 896 change management consultancies based in New York, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 11,651 reachable decision-makers.

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

As of Sep 23, 2026
50.6%Verified-email coverage
25.7Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · New York
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
668
11-50
165
51-200
43
201-500
11
501-1,000
4
1,001-5,000
4
5,001-10,000
1

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 896 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 consultancies, 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 consultancies”. 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 consultancies), 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 consultancies, 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, 11,651 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 consultancies 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 consultancies, 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 consultancies are there based in New York, United States?

RevenueBase identified 896 change management consultancies 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 has the most change management consultancies?

New York leads with 896 headquartered companies, followed by Atlanta (623) and Chicago (597).

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 11,651 verified decision-maker contacts tracked across these 896 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.

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