Company lists · Data refreshed September 2026

Top 25 Regulatory consulting firms based in the United States

Name: Regulatory consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 2,213 companies tracked

RevenueBase identified 2,213 regulatory consulting firms headquartered in the United States as of September 2026 and tracks 23,113 professional contacts across them, including 10,003 with verified work emails and 8,613 with mobile numbers. New York is the largest hub.

This list covers regulatory consulting firms 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 5, 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 5, 2026 86% judged on-target in blind review

2,213Companies

23,113Contacts tracked

10,003Verified emails

8,613Mobile numbers

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The 25 largest regulatory consulting firms based in the United States

Ranked by team size

Top 25 of 2,213 regulatory consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to regulatory 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	Propharma	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,079 contacts →
	Indirect evidence “At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Source: RevenueBase Database · checked Sep 5, 2026
2	Veristat	Partial evidence	Southborough, MA, United StatesHQ checked Sep 5, 2026	501-1,000	367 contacts →
	Partial evidence “Veristat is the science-first full-service drug and biologic CRO and consultancy that integrates strategic planning, regulatory expertise, and clinical trial execution to rapidly…” Source: RevenueBase Database · checked Sep 5, 2026
3	Registrar Corp	Partial evidence	Hampton, VA, United StatesHQ checked Sep 5, 2026	51-200	317 contacts →
	Partial evidence “Registrar Corp is your trusted partner helping you navigate global regulatory requirements with expert services, innovative software solutions and comprehensive online compliance…” Source: RevenueBase Database · checked Sep 5, 2026
4	Comply	Indirect evidence	New York City, NY, United StatesHQ checked Sep 5, 2026	201-500	308 contacts →
	Indirect evidence “At Comply, we pride ourselves on being the champion for compliance professionals.” Source: RevenueBase Database · checked Sep 5, 2026
5	Valsource INC	Indirect evidence	Downingtown, PA, United StatesHQ checked Sep 5, 2026	201-500	245 contacts →
	Indirect evidence “Since 1996, ValSource has worked with hundreds of pharmaceutical, biopharma, and medical device organizations around the world.” Source: RevenueBase Database · checked Sep 5, 2026
6	Kymanox	Indirect evidence	Morrisville, NC, United StatesHQ checked Sep 5, 2026	201-500	239 contacts →
	Indirect evidence “Kymanox (‘ki-mah-noks’), meaning Ideal Knowledge Transfer, is your trusted partner in advancing life science innovation.” Source: RevenueBase Database · checked Sep 5, 2026
7	Mcra, An Iqvia Business	Partial evidence	Washington, DC, United StatesHQ checked Sep 5, 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 5, 2026
8	Canopy Life Sciences	Indirect evidence	Danbury, CT, United StatesHQ checked Sep 5, 2026	201-500	222 contacts →
	Indirect evidence “Canopy provides Clinical to Commercial services to 300+ Biotechnology, Pharmaceutical and Medical Device Companies.” Source: RevenueBase Database · checked Sep 5, 2026
9	Lachman Consultant Services	Partial evidence	Westbury, NY, United StatesHQ checked Sep 5, 2026	51-200	179 contacts →
	Partial evidence “Quality & Compliance \| Regulatory Strategy \| Inspection Readiness & Remediation \| Data Integrity.” Source: RevenueBase Database · checked Sep 5, 2026
10	FI Consulting	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 5, 2026	51-200	179 contacts →
	Indirect evidence “As sweeping changes in regulation, technology, and markets transform the financial sector, high performing organizations know they can’t stay ahead by standing still.” Source: RevenueBase Database · checked Sep 5, 2026
11	SSI Strategy	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 5, 2026	51-200	169 contacts →
	Indirect evidence “At SSI Strategy, we're strategic partners deeply invested in our clients' success.” Source: RevenueBase Database · checked Sep 5, 2026
12	Celegence	Partial evidence	Downers Grove, IL, United StatesHQ checked Sep 5, 2026	51-200	164 contacts →
	Partial evidence “Celegence provides services and solutions to support the Life Sciences industry with regulatory affairs operations and strategy.” Source: RevenueBase Database · checked Sep 5, 2026
13	G&l Scientific	Partial evidence	Madison, NJ, United StatesHQ checked Sep 5, 2026	201-500	155 contacts →
	Partial evidence “Built upon the strong foundation of delivering decades of industry-leading regulatory and quality services, G&L Scientific has evolved into a leading Integrated Product…” Source: RevenueBase Database · checked Sep 5, 2026
14	Optima Partners	Strong evidence	NY, United StatesHQ checked Sep 5, 2026	51-200	145 contacts →
	Strong evidence “Established in 2014, Optima is a leading global regulatory compliance and cybersecurity consulting firm advising financial institutions, including investment managers, hedge…” Source: RevenueBase Database · checked Sep 5, 2026
15	Soho Square Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	142 contacts →
	Partial evidence “Experts on financial regulatory & compliance, business analysis, project Implementation and delivery for Corporate and Investment Banking, Asset management clients Firm…” Source: RevenueBase Database · checked Sep 5, 2026
16	Citrus Health Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	141 contacts →
	Indirect evidence “Citrus Health Group is a dynamic, boutique strategic consultancy that supports our clients along the science-to-value continuum to optimize effective commercial development of…” Source: RevenueBase Database · checked Sep 5, 2026
17	MMR Consulting	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 5, 2026	51-200	124 contacts →
	Partial evidence “MMR Consulting Inc.” Source: RevenueBase Database · checked Sep 5, 2026
18	Risk & Regulatory Consulting LLC	Strong evidence	Farmington, CT, United StatesHQ checked Sep 5, 2026	51-200	122 contacts →
	Strong evidence “Risk & Regulatory Consulting, LLC is a leading, national professional services firm dedicated to providing exceptional consulting services to insurance regulators.” Source: RevenueBase Database · checked Sep 5, 2026
19	Validant	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	120 contacts →
	Partial evidence “Validant has joined forces with our partner consultancy groups to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: RevenueBase Database · checked Sep 5, 2026
20	Xogene	Partial evidence	Englewood, NJ, United StatesHQ checked Sep 5, 2026	51-200	113 contacts →
	Partial evidence “Offering flexibility, in-depth regulatory knowledge, and technical expertise in the area of Transparency and Clinical Trial disclosure, Xogene offers quality outsourcing of…” Source: RevenueBase Database · checked Sep 5, 2026
21	Opus Regulatory INC	Strong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	113 contacts →
	Strong evidence “Opus Regulatory is a niche consulting firm headquartered in the Seaport district of Boston.” Source: RevenueBase Database · checked Sep 5, 2026
22	DFP Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	110 contacts →
	Indirect evidence “For over 40 years, DFP Partners has been a committed ally to Broker-Dealers, Registered Investment Advisers, and other financial services firms looking for accounting and…” Source: RevenueBase Database · checked Sep 5, 2026
23	Masuu Global Solutions	Indirect evidence	Miami, FL, United StatesHQ checked Sep 5, 2026	201-500	106 contacts →
	Indirect evidence “Masuu with over 280 Subject Matter Experts (SMEs) and a leadership/scientific advisory team featuring former personnel from health authorities like the USFDA, EMA, MHRA, ANVISA…” Source: RevenueBase Database · checked Sep 5, 2026
24	Sequoia Biotech Consulting	Partial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	201-500	101 contacts →
	Partial evidence “In September 2024, Sequoia Biotech Consulting merged with Syner-G and officially rebranded as Syner-G in 2025.” Source: RevenueBase Database · checked Sep 5, 2026
25	Chambers Group, INC	Indirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 5, 2026	51-200	98 contacts →
	Indirect evidence “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Source: RevenueBase Database · checked Sep 5, 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: regulatory 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 regulatory consulting firms.
Partial evidence: Its own public description names part of regulatory consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name regulatory 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 2,213 regulatory consulting firms based in the United States

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Regulatory consulting firms based in the United States at a glance

As of Sep 5, 2026

43.3%Verified-email coverage

37.3%Mobile-number coverage

10.4Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

1,558

11-50

489

51-200

122

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

9,4020–30

56531–60

261–90

090–180

34180+

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 regulatory 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 the United States whose own description of what they do matches “regulatory 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 regulatory 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 regulatory consulting firms, 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, 10,003 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 5, 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.

Regulatory consulting firms 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 regulatory 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 regulatory consulting firms are there based in the United States?

RevenueBase identified 2,213 regulatory consulting firms 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?

Propharma, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most regulatory consulting firms?

New York leads with 80 headquartered companies, followed by Washington (75) and Boston (51).

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 10,003 verified decision-maker contacts tracked across these 2,213 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 5, 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.