Company lists · Data refreshed September 2026

Top 25 Regulations consulting firms based in Washington, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 112 companies tracked

RevenueBase identified 112 regulations consulting firms headquartered in Washington, United States as of September 2026 and tracks 871 professional contacts across them, including 261 with verified work emails. Across the United States, Washington is the largest hub for this category.

This list covers regulations consulting firms 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 29, 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 29, 2026 86% judged on-target in blind review

112Companies

871Contacts tracked

261Verified emails

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The 25 largest regulations consulting firms based in Washington, United States

Ranked by team size

Top 25 of 112 regulations consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to regulations 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	The Cohen Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	110 contacts →
	Indirect evidence “Who We Are A talented team of experts with years of experience in both government and industry, with a passion for finding solutions and a deep understanding of the institutions…” Source: RevenueBase Database · checked Sep 29, 2026
2	Oriel Stat A Matrix	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	62 contacts →
	Indirect evidence “Oriel STAT-A-MATRIX has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: RevenueBase Database · checked Sep 29, 2026
3	NDA Partners, A Propharma Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	53 contacts →
	Partial evidence “NDA Partners, a ProPharma Company, is a life sciences management consulting organization focused on providing product development and regulatory services to the pharmaceutical…” Source: RevenueBase Database · checked Sep 29, 2026
4	Jacobs, Cordova & Associates	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	22 contacts →
	Partial evidence “Jacobs, Cordova & Associates (JC & is a consulting firm, founded in 2001, specializing in designing and implementing improvements in the quality of government regulators and…” Source: RevenueBase Database · checked Sep 29, 2026
5	The Acta Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “The Acta Group (Acta) is a global consulting firm established to control the spiraling costs and inefficiencies encountered by clients seeking approvals to market chemicals…” Source: RevenueBase Database · checked Sep 29, 2026
6	The Clark Group LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Partial evidence “The Clark Group is an environmental policy consulting firm that provides a broad range of services to government, private and nonprofit clients.” Source: RevenueBase Database · checked Sep 29, 2026
7	The Weinberg Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	17 contacts →
	Indirect evidence “The Weinberg Group, a ProPharma Group company, is the global leader in regulatory and compliance services, with headquarters in Washington, D.C.” Source: RevenueBase Database · checked Sep 29, 2026
8	Dawson & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Dawson & Associates is the nation’s premier firm for resolving complex challenges involving Federal water and environmental policies.” Source: RevenueBase Database · checked Sep 29, 2026
9	Trade Pacific Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect evidence “Formed in 2004, our lawyers and international trade consultants counsel clients to comply with and capitalize on the complex and evolving U.S.” Source: RevenueBase Database · checked Sep 29, 2026
10	Sirona Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	14 contacts →
	Partial evidence “Sirona Strategies is a proactive, strategic health care consulting firm that consistently delivers results for clients seeking to succeed and grow in an evolving health care…” Source: RevenueBase Database · checked Sep 29, 2026
11	Greenleaf Health, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect evidence “Greenleaf Health has joined forces with our Validant Group partners to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: RevenueBase Database · checked Sep 29, 2026
12	Summit Strategies Government Affairs LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “Summit Strategies was founded in 2015 by five partners with more than 150 years of government and government affairs experience.” Source: RevenueBase Database · checked Sep 29, 2026
13	TSG Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	11 contacts →
	Indirect evidence “For over 30 years, TSG has provided companies around the world with regulatory guidance and scientific expertise.” Source: RevenueBase Database · checked Sep 29, 2026
14	Kleinfeld, Kaplan & Becker, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “Kleinfeld, Kaplan & Becker is one of the most distinguished and experienced law firms in the country specializing in FDA law.” Source: RevenueBase Database · checked Sep 29, 2026
15	TWW	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “The Wright Way Enterprises (TWW) is certified as an SBA 8(a) and HUBZone small business and DC Certified Business Enterprise (CBE), stewarding organizations in addressing the…” Source: RevenueBase Database · checked Sep 29, 2026
16	Ruddy Gregory, Pllc	Indirect evidence	Washington, United StatesHQ checked Sep 29, 2026	1-10	9 contacts →
	Indirect evidence “Formerly known as Ruddy Law Office, Ruddy Gregory, PLLC ("Ruddy Gregory") is a Washington, DC based boutique law firm that provides legal advice to registered investment advisers…” Source: RevenueBase Database · checked Sep 29, 2026
17	Emissary LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “At emissary, we know that maximizing your corporate investment starts with hiring the right talent.” Source: RevenueBase Database · checked Sep 29, 2026
18	O Riordan Bethel LAW Firm, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	7 contacts →
	Indirect evidence “Nationally-recognized and award-winning economists, lawyers and public policy experts providing public policy analysis; business process improvement; research and analysis…” Source: RevenueBase Database · checked Sep 29, 2026
19	Govnavigators	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “GovNavigators guide clients through the complexities of government to help them thrive and grow.” Source: RevenueBase Database · checked Sep 29, 2026
20	Leftwich LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	7 contacts →
	Partial evidence “Leftwich LLC is a multi-disciplinary legal and consulting firm.” Source: RevenueBase Database · checked Sep 29, 2026
21	American Redwood Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	6 contacts →
	Indirect evidence “OUR MISSION:" To promote organizational culture that encourages a commitment to local, state, and federal regulatory compliance" info@arcglobalteam.com 1-833-TEAM ARC…” Source: RevenueBase Database · checked Sep 29, 2026
22	Blue Ridge LAW & Policy	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “Blue Ridge Law & Policy, P.C.” Source: RevenueBase Database · checked Sep 29, 2026
23	Smart Policy Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “SMART Policy Group's team (SPG) has extensive experience and knowledge about the processes and leverage points in federal and state policy and regulatory actions, reflecting…” Source: RevenueBase Database · checked Sep 29, 2026
24	Mcintyre & Lemon, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “McIntyre & Lemon, PLLC helps clients efficiently navigate the complex maze of federal and state laws and regulations.” Source: RevenueBase Database · checked Sep 29, 2026
25	Meeks, Butera & Israel	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “Meeks, Butera & Israel is a Washington, DC based law firm that guides clients through the challenging legal, regulatory, and economic environment in the nation’s capital.” Source: RevenueBase Database · checked Sep 29, 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: regulations 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 regulations consulting firms.
Partial evidence: Its own public description names part of regulations consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name regulations 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 112 regulations consulting firms based in Washington, United States

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Regulations consulting firms based in Washington, United States at a glance

As of Sep 29, 2026

30.0%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 112 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 regulations 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 Washington, United States whose own description of what they do matches “regulations 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 regulations 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 regulations consulting firms, 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, 261 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 29, 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.

Regulations consulting firms 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 regulations 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 regulations consulting firms are there based in Washington, United States?

RevenueBase identified 112 regulations consulting firms 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?

The Cohen Group, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most regulations consulting firms?

Washington leads the United States with 112 headquartered companies, followed by New York (107) and Houston (57).

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 261 verified decision-maker contacts tracked across these 112 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 29, 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.