Company lists · Data refreshed September 2026

Top 25 Lean management consulting companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 1,974 companies tracked

RevenueBase identified 1,974 lean management consulting companies headquartered in the United States as of September 2026 and tracks 10,153 professional contacts across them, including 3,087 with verified work emails and 4,353 with mobile numbers. Atlanta is the largest hub.

This list covers lean management consulting companies 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 4, 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 4, 2026 86% judged on-target in blind review

1,974Companies

10,153Contacts tracked

3,087Verified emails

4,353Mobile numbers

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The 25 largest lean management consulting companies based in the United States

Ranked by team size

Top 25 of 1,974 lean management consulting companies based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to lean 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	SEI	Strong evidence	Cincinnati, PA, United StatesHQ checked Sep 4, 2026	501-1,000	611 contacts →
	Strong evidence “SEI is a management consulting firm delivering fresh perspectives and reliable results.” Source: RevenueBase Database · checked Sep 4, 2026
2	Skender	Indirect evidence	Chicago, IN, United StatesHQ checked Sep 4, 2026	201-500	272 contacts →
	Indirect evidence “The premier construction experience.” Source: RevenueBase Database · checked Sep 4, 2026
3	Thought Logic Consulting	Indirect evidence	Atlanta, VA, United StatesHQ checked Sep 4, 2026	201-500	217 contacts →
	Indirect evidence “Thought logic is a functionally-led, digitally enabled consultancy.” Source: RevenueBase Database · checked Sep 4, 2026
4	Compulink	Indirect evidence	St. Petersburg, FL, United StatesHQ checked Sep 4, 2026	201-500	189 contacts →
	Indirect evidence “Compulink is a performance based company that is focused on continuous improvement in our practices and procedures as well as the quality of service to our customers.” Source: RevenueBase Database · checked Sep 4, 2026
5	Herren Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	143 contacts →
	Indirect evidence “Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Source: RevenueBase Database · checked Sep 4, 2026
6	Trissential	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 4, 2026	201-500	135 contacts →
	Indirect evidence “Trissential, an Expleo Company, blends local trust with global reach, supported by experts across 29 countries.” Source: RevenueBase Database · checked Sep 4, 2026
7	The LAB Consulting	Strong evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	51-200	95 contacts →
	Strong evidence “The Lab is a management consulting firm that helps executive project sponsors realize sustainable and transformative process and financial benefits for their businesses by…” Source: RevenueBase Database · checked Sep 4, 2026
8	Censeo Consulting Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 4, 2026	51-200	85 contacts →
	Indirect evidence “Running an organization and executing plans is hard work.” Source: RevenueBase Database · checked Sep 4, 2026
9	Cornerstone Consulting Organization	Partial evidence	Toledo, OH, United StatesHQ checked Sep 4, 2026	201-500	81 contacts →
	Partial evidence “Cornerstone Consulting Organization (CCO) provides enterprise strategy and operations and manufacturing systems solutions.” Source: RevenueBase Database · checked Sep 4, 2026
10	Iet, Inc. Industrial Engineering & Consulting	Partial evidence	Toledo, OH, United StatesHQ checked Sep 4, 2026	51-200	80 contacts →
	Partial evidence “IET is a full-service industrial and manufacturing engineering service and consulting firm established in 1989.” Source: RevenueBase Database · checked Sep 4, 2026
11	The Northridge Group	Indirect evidence	Rosemont, IL, United StatesHQ checked Sep 4, 2026	51-200	77 contacts →
	Indirect evidence “At The, we partner with organizations to improve performance, accelerate execution, and transform strategy into measurable results.” Source: RevenueBase Database · checked Sep 4, 2026
12	Next Level Partners , LLC	Partial evidence	Naples, FL, United StatesHQ checked Sep 4, 2026	51-200	74 contacts →
	Partial evidence “NEXT LEVEL Partners® is much more than a consulting firm, we’re your partner in creating self-sustaining capability through Business Enterprise Transformation, Knowledge…” Source: RevenueBase Database · checked Sep 4, 2026
13	Management Solutions	Strong evidence	Knoxville, TN, United StatesHQ checked Sep 4, 2026	51-200	65 contacts →
	Strong evidence “Management Solutions is a national award-winning performance management and consulting services firm that specializes in improving organizational performance through proven…” Source: RevenueBase Database · checked Sep 4, 2026
14	FTE Factory Advisors	Indirect evidence	Troy, MI, United StatesHQ checked Sep 4, 2026	11-50	61 contacts →
	Indirect evidence “Factory Advisors \| Operational Excellence Starts on the Factory Floor We don’t act like typical consultants, and we don’t want to be mistaken for them.” Source: RevenueBase Database · checked Sep 4, 2026
15	Lean Enterprise Institute	Partial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	58 contacts →
	Partial evidence “The nonprofit Lean Enterprise Institute (LEI) helps companies and people make things better through lean thinking and practice.” Source: RevenueBase Database · checked Sep 4, 2026
16	NJMEP	Indirect evidence	Cedar Knolls, NJ, United StatesHQ checked Sep 4, 2026	11-50	56 contacts →
	Indirect evidence “New Jersey Manufacturing Extension Program, Inc.(NJMEP) is a not-for-profit organization that works with New Jersey’s small to mid-sized businesses to help them improve their…” Source: RevenueBase Database · checked Sep 4, 2026
17	Powers	Strong evidence	Atlanta, NY, United StatesHQ checked Sep 4, 2026	51-200	56 contacts →
	Strong evidence “POWERS is an Atlanta-based management consulting firm that helps manufacturers and service operations convert strategy into measurable floor-level results.” Source: RevenueBase Database · checked Sep 4, 2026
18	Brecham Group	Indirect evidence	Conway, AR, United StatesHQ checked Sep 4, 2026	51-200	56 contacts →
	Indirect evidence “At Brecham Group, we believe your supply chain operations should be a powerful competitive advantage, not a source of inefficiency or frustration.” Source: RevenueBase Database · checked Sep 4, 2026
19	The Association For Manufacturing Excellence AME	Indirect evidence	Rolling Meadows, IL, United StatesHQ checked Sep 4, 2026	n/a	48 contacts →
	Indirect evidence “The Association for Manufacturing Excellence (AME), is a not-for-profit organization founded in 1985 dedicated to helping companies with continuous improvement and their pursuit…” Source: RevenueBase Database · checked Sep 4, 2026
20	Tenzing	Partial evidence	Sewickley, PA, United StatesHQ checked Sep 4, 2026	11-50	45 contacts →
	Partial evidence “Tenzing is a boutique consulting firm delivering measurable results-not decks.” Source: RevenueBase Database · checked Sep 4, 2026
21	Excelerate	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 4, 2026	11-50	43 contacts →
	Indirect evidence “We help our clients translate strategy into action to drive growth, reduce cost or increase efficiency.” Source: RevenueBase Database · checked Sep 4, 2026
22	Tormod, A Hargrove Company	Indirect evidence	Mobile, AL, United StatesHQ checked Sep 4, 2026	201-500	42 contacts →
	Indirect evidence “Tormod exists to help manufacturing leaders run great plants.” Source: RevenueBase Database · checked Sep 4, 2026
23	Process Research & Optimization	Partial evidence	Bonita Springs, FL, United StatesHQ checked Sep 4, 2026	51-200	41 contacts →
	Partial evidence “Process Research & Optimization (PRO) is an international consulting firm dedicated to unlocking our clients’ growth potential and profitability through process innovation.” Source: RevenueBase Database · checked Sep 4, 2026
24	Streamliners Management Consulting	Strong evidence	Wilmington, DE, United StatesHQ checked Sep 4, 2026	11-50	38 contacts →
	Strong evidence “Streamliners is a management consulting firm specialized in rapid efficiency improvements, operational excellence and fast turnaround for manufacturing and service industries…” Source: RevenueBase Database · checked Sep 4, 2026
25	The Phoenix Group, Springboro Ohio	Indirect evidence	Springboro, MI, United StatesHQ checked Sep 4, 2026	51-200	36 contacts →
	Indirect evidence “The Phoenix Group Drives Process Improvement and Operational Excellence at Your Organization The Phoenix Group delivers lasting change with organizations we partner with.” Source: RevenueBase Database · checked Sep 4, 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: lean 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 lean management consulting companies.
Partial evidence: Its own public description names part of lean 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 lean 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 1,974 lean management consulting companies based in the United States

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Lean management consulting companies based in the United States at a glance

As of Sep 4, 2026

30.4%Verified-email coverage

42.9%Mobile-number coverage

5.1Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · Atlanta

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

1,589

11-50

298

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

24931–60

1,66361–90

1,15590–180

20180+

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 lean 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 the United States whose own description of what they do matches “lean 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 lean 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 lean management consulting companies, 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, 3,087 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 4, 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.

Lean management consulting companies 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 lean 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 lean management consulting companies are there based in the United States?

RevenueBase identified 1,974 lean management consulting companies 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?

SEI, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most lean management consulting companies?

Atlanta leads with 53 headquartered companies, followed by Houston (45) and Chicago (33).

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 3,087 verified decision-maker contacts tracked across these 1,974 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 4, 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.