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, how directly it supports the match, 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 SmartSearch, 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 Match evidence 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

Explore all 2,213 companies → Free signup · no credit card · 500 free credits

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. Evidence rates how directly each company's own description names regulatory consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	PropharmaIndirect evidence	Raleigh, NC, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,079
	“At ProPharma, we help pharmaceutical, biotechnology, and medical device companies bring life-changing therapies to market.” Source: company website · checked Sep 5, 2026
2	VeristatPartial evidence	Southborough, MA, United StatesHQ checked Sep 5, 2026	501-1,000	367
	“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: company website · checked Sep 5, 2026
3	Registrar CorpPartial evidence	Hampton, VA, United StatesHQ checked Sep 5, 2026	51-200	317
	“Registrar Corp is your trusted partner helping you navigate global regulatory requirements with expert services, innovative software solutions and comprehensive online compliance…” Source: company website · checked Sep 5, 2026
4	ComplyIndirect evidence	New York City, NY, United StatesHQ checked Sep 5, 2026	201-500	308
	“At Comply, we pride ourselves on being the champion for compliance professionals.” Source: company website · checked Sep 5, 2026
5	Valsource INCIndirect evidence	Downingtown, PA, United StatesHQ checked Sep 5, 2026	201-500	245
	“Since 1996, ValSource has worked with hundreds of pharmaceutical, biopharma, and medical device organizations around the world.” Source: company website · checked Sep 5, 2026
6	KymanoxIndirect evidence	Morrisville, NC, United StatesHQ checked Sep 5, 2026	201-500	239
	“Kymanox (‘ki-mah-noks’), meaning Ideal Knowledge Transfer, is your trusted partner in advancing life science innovation.” Source: company website · checked Sep 5, 2026
7	Mcra, An Iqvia BusinessPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	226
	“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: company website · checked Sep 5, 2026
8	Canopy Life SciencesIndirect evidence	Danbury, CT, United StatesHQ checked Sep 5, 2026	201-500	222
	“Canopy provides Clinical to Commercial services to 300+ Biotechnology, Pharmaceutical and Medical Device Companies.” Source: company website · checked Sep 5, 2026
9	Lachman Consultant ServicesPartial evidence	Westbury, NY, United StatesHQ checked Sep 5, 2026	51-200	179
	“Quality & Compliance \| Regulatory Strategy \| Inspection Readiness & Remediation \| Data Integrity.” Source: company website · checked Sep 5, 2026
10	FI ConsultingIndirect evidence	Arlington, VA, United StatesHQ checked Sep 5, 2026	51-200	179
	“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: company website · checked Sep 5, 2026
11	SSI StrategyIndirect evidence	Parsippany, NJ, United StatesHQ checked Sep 5, 2026	51-200	169
	“At SSI Strategy, we're strategic partners deeply invested in our clients' success.” Source: company website · checked Sep 5, 2026
12	CelegencePartial evidence	Downers Grove, IL, United StatesHQ checked Sep 5, 2026	51-200	164
	“Celegence provides services and solutions to support the Life Sciences industry with regulatory affairs operations and strategy.” Source: company website · checked Sep 5, 2026
13	G&l ScientificPartial evidence	Madison, NJ, United StatesHQ checked Sep 5, 2026	201-500	155
	“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: company website · checked Sep 5, 2026
14	Optima PartnersStrong evidence	NY, United StatesHQ checked Sep 5, 2026	51-200	145
	“Established in 2014, Optima is a leading global regulatory compliance and cybersecurity consulting firm advising financial institutions, including investment managers, hedge…” Source: company website · checked Sep 5, 2026
15	Soho Square SolutionsPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	142
	“Experts on financial regulatory & compliance, business analysis, project Implementation and delivery for Corporate and Investment Banking, Asset management clients Firm…” Source: company website · checked Sep 5, 2026
16	Citrus Health GroupIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	141
	“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: company website · checked Sep 5, 2026
17	MMR ConsultingPartial evidence	Carlsbad, CA, United StatesHQ checked Sep 5, 2026	51-200	124
	“MMR Consulting Inc.” Source: company website · checked Sep 5, 2026
18	Risk & Regulatory Consulting LLCStrong evidence	Farmington, CT, United StatesHQ checked Sep 5, 2026	51-200	122
	“Risk & Regulatory Consulting, LLC is a leading, national professional services firm dedicated to providing exceptional consulting services to insurance regulators.” Source: company website · checked Sep 5, 2026
19	ValidantPartial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	120
	“Validant has joined forces with our partner consultancy groups to reposition as one global regulatory brand: ELIQUENT Life Sciences.” Source: company website · checked Sep 5, 2026
20	XogenePartial evidence	Englewood, NJ, United StatesHQ checked Sep 5, 2026	51-200	113
	“Offering flexibility, in-depth regulatory knowledge, and technical expertise in the area of Transparency and Clinical Trial disclosure, Xogene offers quality outsourcing of…” Source: company website · checked Sep 5, 2026
21	Opus Regulatory INCStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	113
	“Opus Regulatory is a niche consulting firm headquartered in the Seaport district of Boston.” Source: company website · checked Sep 5, 2026
22	DFP PartnersIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	110
	“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: company website · checked Sep 5, 2026
23	Masuu Global SolutionsIndirect evidence	Miami, FL, United StatesHQ checked Sep 5, 2026	201-500	106
	“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: company website · checked Sep 5, 2026
24	Sequoia Biotech ConsultingPartial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	201-500	101
	“In September 2024, Sequoia Biotech Consulting merged with Syner-G and officially rebranded as Syner-G in 2025.” Source: company website · checked Sep 5, 2026
25	Chambers Group, INCIndirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 5, 2026	51-200	98
	“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: company website · checked Sep 5, 2026

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

1-10Median size (employees)

New YorkLargest hub · 80 HQs

8,613Contacts with mobile numbers

Sep 5, 2026Data 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+

Verified emails by last verification

0–30

9,402

31–60

565

61–90

90–180

180+

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 evidence 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 SmartSearch, 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.
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 an evidence 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

Regulatory consulting firms in New York80
Regulatory consulting firms in Washington75
Regulatory consulting firms in Boston51
Regulatory consulting firms in San Diego39
Regulatory consulting firms in Austin33
Regulatory consulting firms in Miami33
Regulatory consulting firms in Raleigh30
Regulatory consulting firms in Houston29
Regulatory consulting firms in Chicago28
Regulatory consulting firms in Atlanta25

Frequently asked

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 SmartSearch, 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.