Company lists · Data refreshed September 2026

Top 25 Mass tort litigation attorneys based in Boston, United States

Name: Mass tort litigation attorneys based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 38 companies tracked

RevenueBase identified 38 company matches for mass tort litigation attorneys associated with Boston, United States as of September 2026 and tracks 857 professional contacts across them, including 560 with verified work emails. Across the United States, Houston is the largest hub for this category (164 companies); Boston has 38.

This list covers company matches for mass tort litigation attorneys associated with Boston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

38Companies

857Contacts tracked

560Verified emails

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The 25 largest mass tort litigation attorneys based in Boston, United States

Ranked by team size

Top 25 of 38 company matches for mass tort litigation attorneys based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Boyle Shaughnessy LAW	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	137 contacts →
	Exact match “Recognized as one of the region's most experienced, reliable and persistent litigation firms, Boyle \| Shaughnessy Law builds confidence with each client by achieving winning…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Cetrulo LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	100 contacts →
	Exact match “For over 25 years, our dedicated attorneys have been setting the standard for exceptional representation in liability defense litigation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Campbell Conroy & O'neil, P.C	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	83 contacts →
	Exact match “Recognized both nationally and internationally for delivering results on high stakes, complex litigation throughout the United States, Campbell Conroy & O’Neil, P.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Cmbg3 LAW	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	75 contacts →
	Exact match “CMBG3 Law is a dynamic law firm that litigates, counsels, and navigates its clients through complex legal matters throughout New England, northern and southern California, and a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Altman Nussbaum Shunnarah Trial Attorneys	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	60 contacts →
	Exact match “With over 34 years of combined experience under the law firm's belt, Altman Nussbaum Shunnarah Trial Attorneys, P.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Thornton LAW Firm LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	60 contacts →
	Exact match “Thornton Law Firm LLP is one of the largest plaintiff law firms in New England.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Sweeney Merrigan Personal Injury Lawyers	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	41 contacts →
	Exact match “Sweeney Merrigan Personal Injury Lawyers is a personal injury law firm in Boston comprised of talented attorneys dedicated to getting excellent results for their clients and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Lubin & Meyer PC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	37 contacts →
	Exact match “THE LEADER IN MEDICAL MALPRACTICE LAW Lubin & Meyer PC is recognized nationally as one of the country’s leading medical malpractice and catastrophic personal injury law firms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Martin, Magnuson, Mccarthy & Kenney	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	36 contacts →
	Exact match “Founded in 1957, Martin, Magnuson, McCarthy & Kenney is a mid-sized law firm with extensive civil litigation and appellate experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Jones Kelleher LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “The attorneys at Jones Kelleher bring with them more than 200 years of combined legal experience over a broad spectrum of catastrophic personal injury and wrongful death matters.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Block & Leviton LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “Block & Leviton LLP is a boutique law firm focused on complex litigation nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Brody Hardoon Perkins & Kesten, LLP Bhpk LAW	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	24 contacts →
	Exact match “When we say "Good People, Great Lawyers," we mean it.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Sheff & Cook	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	24 contacts →
	Exact match “Sheff & Cook has distinguished itself as a leader in the field of personal injury law and wrongful death cases.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Sugarman	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	20 contacts →
	Exact match “Our focus is personal injury trial practice.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Crowe & Harris LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Crowe & Harris, LLP represents victims and families of personal injuries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Shepard O'donnell	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “When pursuing a claim for personal injury or wrongful death, selecting the right legal professional can make a meaningful difference in your life and in the lives of those you…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Peck Trial Attorneys, PC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	11 contacts →
	Exact match “Boston's Finest Personal Injury Attorneys” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Swartz & Swartz P.C. Attorneys At LAW	Exact match	Boston, United StatesHQ recorded Sep 20, 2026	11-50	8 contacts →
	Exact match “For decades, the Boston personal injury lawyers at Swartz & Swartz, P.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Breakstone, White & Gluck, P.C	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	8 contacts →
	Exact match “The Boston, Massachusetts trial attorneys of Breakstone, White & Gluck, P.C.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Rights Protection LAW Group, Pllc	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	8 contacts →
	Exact match “Rights Protection Law Group, PLLC is a Law Firm focused on consumer protection, located at 8 Faneuil Hall Marketplace, Third Floor, Boston, MA 02109” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	LAW Offices Of Michael P. Joyce, P.C	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	6 contacts →
	Exact match “The Law Offices of Michael P.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Avalon LAW Offices, P.C	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Zisson & Jacobs LLP	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	5 contacts →
	Exact match “Boston plaintiff's firm representing personal injury clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Kazarian LAW	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	4 contacts →
	Exact match “I am attorney Charles Kazarian.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	LAW Offices Of Christopher Sullivan, P.C	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	4 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “mass tort litigation attorneys”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 38 mass tort litigation attorneys based in Boston, United States

See the full list, filter by size, metro and specialty, and access 560 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mass tort litigation attorneys based in Boston, United States at a glance

As of Sep 20, 2026

65.3%Verified-email coverage

22.6Average contacts per company

11-50Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 38 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Boston, United States whose business descriptions match “mass tort litigation attorneys” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 560 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Mass tort litigation attorneys by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “mass tort litigation attorneys”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mass tort litigation attorneys are there based in Boston, United States?

RevenueBase identified 38 company matches for mass tort litigation attorneys associated with Boston, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Boyle Shaughnessy LAW tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most mass tort litigation attorneys?

Houston leads the United States with 164 company records, followed by Chicago (142) and New York (131). Boston has 38.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 560 professional contacts with verified work emails tracked across these 38 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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.