Company lists · Data refreshed September 2026

Top 25 Interim management consulting companies based in Washington, United States

Name: Interim management consulting companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 87 companies tracked

RevenueBase identified 87 interim management consulting companies headquartered in Washington, United States as of September 2026 and tracks 438 professional contacts across them, including 116 with verified work emails. Across the United States, New York is the largest hub for this category (192 companies); Washington has 87.

This list covers interim management consulting companies headquartered in Washington, 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

87Companies

438Contacts tracked

116Verified emails

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The 25 largest interim management consulting companies based in Washington, United States

Ranked by team size

Top 25 of 87 interim management consulting companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to interim management consulting 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	Willpower Consultation	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	75 contacts →
	Indirect evidence “Willpower Consultation offers direct solutions for your corporate strategy.” Source: RevenueBase Database · checked Sep 28, 2026
2	KGO	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “We are your project people.” Source: RevenueBase Database · checked Sep 28, 2026
3	IBS Management & Consultancy Services	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	21 contacts →
	Strong evidence “IBS is an Accounting, Finance, Management, and Transaction Advisory consulting firm.” Source: RevenueBase Database · checked Sep 28, 2026
4	TH Bender	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “We help companies build high-performing leadership teams across the U.S, Canada, and Mexico.” Source: RevenueBase Database · checked Sep 28, 2026
5	Innovative Federal Strategies	Indirect evidence	Washington, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Innovative Federal Strategies provides big firm results with a small firm feel.” Source: RevenueBase Database · checked Sep 28, 2026
6	The CMO Syndicate	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “The CMO Syndicate is a global company of interim Chief Marketing Officers with over 375+ years of combined corporate executive experience operating and accelerating organizational…” Source: RevenueBase Database · checked Sep 28, 2026
7	Captivate Perspectives	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Captivate Perspectives provides high quality talents and services to support organizations in achieving maximum and positive results.” Source: RevenueBase Database · checked Sep 28, 2026
8	Quodammodo Solutions LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “QS Consulting leverages decades of Project Management and Advisory Services experience in the areas of Human Capital Management and Business Continuity.” Source: RevenueBase Database · checked Sep 28, 2026
9	HIP Consult INC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Strong evidence “HIP Consult is an independent management consulting firm, offering strategic and operational services to companies, investors, international agencies, and governments worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
10	Strategic Results Consulting LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “Strategic Results Consulting has the experience and expertise to help you navigate the growth of your organization while using a tailor-made approach to help you achieve continued…” Source: RevenueBase Database · checked Sep 28, 2026
11	O2 Consulting Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “For more than 40 years the O2 Consulting Group leadership worked side by side of brilliant CEOs – CEOs with incredible creativity, passion and the desire to accomplish the…” Source: RevenueBase Database · checked Sep 28, 2026
12	Outvox	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “OutVox is a boutique management consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
13	Lateral Solutions	Indirect evidence	Washington, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Lateral Solutions partners with growth-minded leaders who want to scale without chaos.” Source: RevenueBase Database · checked Sep 28, 2026
14	Mevvn, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Strong evidence “mevvn, LLC provides management consulting services to support organizational leaders in nonprofits, startups and small businesses.” Source: RevenueBase Database · checked Sep 28, 2026
15	Concordia Consulting LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Karen leverages her expertise in business processes and strategic planning to help C-Suite leaders communicate more effectively, develop synergy, and attain desired results.” Source: RevenueBase Database · checked Sep 28, 2026
16	Organic Growth Business Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “At Organic Growth Business, our CFO Consultants grow businesses from the inside out.” Source: RevenueBase Database · checked Sep 28, 2026
17	Dahl-Morrow International	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Strong evidence “DMI is an Executive Search, Interim Management, and Human Capital Consulting firm, with over 25 years of success in providing industry expertise to our clients worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
18	Chaise Management Group, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	2 contacts →
	Strong evidence “Chaise Group is a forward-thinking management consulting firm that provides market-ready, innovative, and sustainable solutions to meet the complex needs of today’s organizations.” Source: RevenueBase Database · checked Sep 28, 2026
19	Aegean Associates	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	2 contacts →
	Strong evidence “Aegean Associates provides a suite of strategy, organizational development, communications, talent and change management consulting services for a range of organizations including…” Source: RevenueBase Database · checked Sep 28, 2026
20	Victoria Gillespie Consulting Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Victoria brings strategic vision everywhere she goes, blending big-picture perspective with tactical considerations to inspire, build trust, and achieve goals in every setting.” Source: RevenueBase Database · checked Sep 28, 2026
21	Purple PEN Labs	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Purple Pen Labs is a dynamic consultancy focused on guiding mission-driven organizations through transformation and growth.” Source: RevenueBase Database · checked Sep 28, 2026
22	Kallan Strategic Partners, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Strategic, operations and organization development consulting for businesses and nonprofit organizations.” Source: RevenueBase Database · checked Sep 28, 2026
23	Brad Weaber Consulting Group, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Brad Weaber Consulting Group’s mission and purpose is to share proven transformative business and strategic expertise to help companies find their voice and build for the future.” Source: RevenueBase Database · checked Sep 28, 2026
24	Jamieson Consulting Services	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Whether you require a communications strategy; a human capital plan, policy, or development program; mediation or facilitation; project or program management; strategic planning…” Source: RevenueBase Database · checked Sep 28, 2026
25	Hart Health Strategy LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Morgan Hart is the principal consultant for Hart Health Strategy LLC.” 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: interim management consulting 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 interim management consulting companies.
Partial evidence: Its own public description names part of interim management consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interim management consulting 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 87 interim management consulting companies based in Washington, United States

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Interim management consulting companies based in Washington, United States at a glance

As of Sep 28, 2026

26.5%Verified-email coverage

5.0Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 87 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 interim management consulting 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.
What qualifies: Companies headquartered in Washington, United States whose own description of what they do matches “interim management consulting 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 interim management consulting 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 interim management consulting companies, and records with no verified work email. Companies headquartered outside Washington 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, 116 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.

Interim management consulting companies 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 interim management consulting 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 interim management consulting companies are there based in Washington, United States?

RevenueBase identified 87 interim management consulting companies headquartered in Washington, 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?

Willpower Consultation, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most interim management consulting companies?

New York leads the United States with 192 headquartered companies, followed by Chicago (150) and Atlanta (143). Washington has 87.

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 116 verified decision-maker contacts tracked across these 87 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.