Company lists · Data refreshed September 2026

Top 25 Scientific consulting firms based in Washington, United States

Name: Scientific 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 14, 2026 81 companies tracked

RevenueBase identified 81 scientific consulting firms headquartered in Washington, United States as of September 2026 and tracks 1,042 professional contacts across them, including 394 with verified work emails. Houston is the largest hub.

This list covers scientific 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 14, 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 14, 2026 86% judged on-target in blind review

81Companies

1,042Contacts tracked

394Verified emails

Explore this list → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 81 scientific consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to scientific 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	Mcra, An Iqvia Business	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	226 contacts →
	Partial evidence “MCRA, an IQVIA business, is a leading full-service medical device, diagnostics, and biologics CRO and consulting advisory firm helping global healthcare companies maximize the…” Source: RevenueBase Database · checked Sep 14, 2026
2	KCIC	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	115 contacts →
	Partial evidence “KCIC is a consulting firm that helps companies manage their product liabilities.” Source: RevenueBase Database · checked Sep 14, 2026
3	Scendea	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	76 contacts →
	Partial evidence “Scendea is an international product development, regulatory, and compliance consulting group serving the pharmaceutical and biotechnology industry.” Source: RevenueBase Database · checked Sep 14, 2026
4	NDA Partners, A Propharma Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
5	Capital Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	43 contacts →
	Partial evidence “Capital Group is a management consulting firm with more than a decade of experience in providing effective and innovative consulting services to public and private sector clients.” Source: RevenueBase Database · checked Sep 14, 2026
6	Northbridge	Indirect evidence	Washington, United StatesHQ checked Sep 14, 2026	11-50	24 contacts →
	Indirect evidence “At Northbridge, we provide our clients with the tools and expertise to help solve complex financial, policy, and environmental challenges.” Source: RevenueBase Database · checked Sep 14, 2026
7	Avascent	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	20 contacts →
	Partial evidence “Avascent is the leading management consulting firm specializing in serving senior executives in the defense, aerospace, healthcare, homeland security, logistics, technical…” Source: RevenueBase Database · checked Sep 14, 2026
8	Victory SIX Advisors	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	20 contacts →
	Indirect evidence “Victory Six provides industry leaders an unbiased, independent lens, pulling from a wealth of experts with distinguished industry and government backgrounds.” Source: RevenueBase Database · checked Sep 14, 2026
9	The Acta Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
10	The Clark Group LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
11	Avantiqor	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	19 contacts →
	Partial evidence “Avantiqor offers scientific, engineering, and technical expertise to clients in the government, academia, and industry.” Source: RevenueBase Database · checked Sep 14, 2026
12	The Weinberg Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
13	Dawson & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
14	Numark Associates, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
15	Toxservices LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	14 contacts →
	Strong evidence “ToxServices is a scientific consulting firm providing with more than a decade of expertise in toxicology, risk assessment, comparative hazard assessment, and the application of…” Source: RevenueBase Database · checked Sep 14, 2026
16	Blackwoods Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	14 contacts →
	Partial evidence “Blackwoods Group is an agriculture and natural resource consulting firm that provides a variety of services ranging from government relations to development and implementation of…” Source: RevenueBase Database · checked Sep 14, 2026
17	TSG Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	51-200	11 contacts →
	Partial evidence “For over 30 years, TSG has provided companies around the world with regulatory guidance and scientific expertise.” Source: RevenueBase Database · checked Sep 14, 2026
18	DRM International, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Partial evidence “DRM International, Inc,(DRM) is a leading DIsadvantaged Business Enterprise (DBE) professional engineering consulting firm offering engineering, architectural, planning…” Source: RevenueBase Database · checked Sep 14, 2026
19	BAYNE	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Partial evidence “Bayne is a national consulting firm that uses industry expertise, skilled consultants, and an ethos of proven business practices to drive results.” Source: RevenueBase Database · checked Sep 14, 2026
20	Washington Occupational Health Associates	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	5 contacts →
	Partial evidence “For over 30 years, Washington Occupational Health Associates (WOHA) has been the leading provider of expert occupational, environmental, and public health consulting services to…” Source: RevenueBase Database · checked Sep 14, 2026
21	Consultvisory	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	11-50	5 contacts →
	Indirect evidence “At ConsultVisory, we specialize in navigating the intricate landscape of Regulatory Compliance, Finance & Accounting Services, Strategic Marketing, Information & Technology…” Source: RevenueBase Database · checked Sep 14, 2026
22	Highrock Analytics	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “HighRock specializes in resolving data and modeling challenges for policyholders and insurers.” Source: RevenueBase Database · checked Sep 14, 2026
23	Deborah Brosnan & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Indirect evidence “Leading and innovative company that finding solutions, bridging gaps and driving positive action for clients and the planet.” Source: RevenueBase Database · checked Sep 14, 2026
24	Smartpharma LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	4 contacts →
	Partial evidence “SmartPharma specializes in commercial and strategic consulting for emerging pharmaceutical companies, big pharma, and investors, focused on products in development.” Source: RevenueBase Database · checked Sep 14, 2026
25	Mantid International LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “MANTID INTERNATIONAL LLC is a compliance and business intelligence consulting firm.” Source: RevenueBase Database · checked Sep 14, 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: scientific 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 scientific consulting firms.
Partial evidence: Its own public description names part of scientific consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name scientific 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 81 scientific consulting firms based in Washington, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 394 reachable decision-makers.

Free signup · no credit card

View the full list →

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

As of Sep 14, 2026

37.8%Verified-email coverage

12.9Average contacts per company

1-10Median size (employees)

224.7%Largest-city concentration · Houston

Sep 14, 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 81 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 scientific 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 “scientific 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 scientific 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 scientific 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, 394 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 14, 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.

Scientific 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 scientific 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 scientific consulting firms are there based in Washington, United States?

RevenueBase identified 81 scientific 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?

Mcra, An Iqvia Business, headquartered in Washington, tops this list with the largest team on record.

Which city has the most scientific consulting firms?

Houston leads with 182 headquartered companies, followed by New York (125) and San Diego (95).

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 394 verified decision-maker contacts tracked across these 81 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 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 81 scientific consulting firms based in Washington, United States. Start with a free account, no credit card.

Download this list →

Related lists

Scientific consulting firms by geography

Browse the directory

Browse: Companies home · Scientific consulting firms in United States · All United States lists · All Scientific consulting firms lists · New lists

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.