Company lists · Data refreshed September 2026

Top 23 Insurance defense law firms based in Philadelphia, United States

Name: Insurance defense law firms based in Philadelphia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 66 companies tracked

RevenueBase identified 66 insurance defense law firms headquartered in Philadelphia, United States as of September 2026 and tracks 2,483 professional contacts across them, including 821 with verified work emails. New York is the largest hub.

This list covers insurance defense law firms headquartered in Philadelphia, 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 3, 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 3, 2026 86% judged on-target in blind review

66Companies

2,483Contacts tracked

821Verified emails

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The 23 largest insurance defense law firms based in Philadelphia, United States

Ranked by team size

Top 23 of 66 insurance defense law firms based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names insurance defense law 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	Marshall DenneheyIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,148
	“Welcome to our company page!” Source: company website · checked Sep 3, 2026
2	Weber GallagherPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	201-500	263
	“With more than 140 legal professionals, Weber Gallagher provides counsel to local, national and international businesses, insurance companies and financial institutions in…” Source: company website · checked Sep 3, 2026
3	Mintzer Sarowitz Zeris & Willis PllcPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	201-500	127
	“Mintzer Sarowitz Zeris & Willis PLLC is a partnership of experienced defense counsel committed to providing our clients with the highest level of representation and service.” Source: company website · checked Sep 3, 2026
4	Swartz CampbellPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	119
	“A Regional Litigation Firm Founded in 1921, Swartz Campbell has provided defense litigation services to insurers and self-insureds throughout the eastern United States.” Source: company website · checked Sep 3, 2026
5	Simon & Simon, PCIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	114
	Source: company website · checked Sep 3, 2026
6	Goldberg, Miller & RubinPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	89
	“Goldberg, Miller & Rubin has built a solid foundation in civil litigation with several hundred defense verdicts and hundreds more defense arbitration awards.” Source: company website · checked Sep 3, 2026
7	Lavin, Cedrone, Graver, Boyd & DisipioPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	65
	“For over 25 years, Lavin, Cedrone, Graver, Boyd & DiSipio has vigorously defended litigation throughout the United States.” Source: company website · checked Sep 3, 2026
8	Mccormick & Priore, P.CIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	47
	“Every firm has a prevailing ethos that drives its relationships and determines its success.” Source: company website · checked Sep 3, 2026
9	Ricci Tyrrell Johnson & Grey, PllcIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	35
	“In 2014, all of the lawyers at Hollstein Keating Cattell Johnson & Goldstein, P.C.” Source: company website · checked Sep 3, 2026
10	Langsam Stevens Silver & Hollaender LLPPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	21
	“Langsam Stevens Silver & Hollaender LLP is a boutique law firm that has developed a client-driven and cost-effective philosophy to provide exceptional advice and legal counsel…” Source: company website · checked Sep 3, 2026
11	Kelley Jasons Mcgowan Spinelli Hanna & Reber LLPPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	18
	“Kelley Jasons is a committed team of experienced lawyers, with more than twenty-five years of experience defending clients in courtrooms around the country.” Source: company website · checked Sep 3, 2026
12	Salmon, Ricchezza, Singer And Turchi LLPIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	18
	Source: company website · checked Sep 3, 2026
13	Kolsby GordonIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	10
	“For more than five decades, Kolsby Gordon has provided unsurpassed representation to clients, and our highly qualified attorneys continue to build upon this legacy.” Source: company website · checked Sep 3, 2026
14	Schwarz & Schwarz, P.CIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	9
	“Our firm concentrates its practice to the areas of civil litigation, personal injury, and subrogation.” Source: company website · checked Sep 3, 2026
15	Solomon, Sherman & GabayIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	8
	“The team of Philadelphia personal injury lawyers at Solomon, Sherman & Gabay, along with their experienced staff, will put a collective 130-plus years of legal experience to work…” Source: company website · checked Sep 3, 2026
16	Griesing LAWPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	8
	“Griesing Law is committed to personal attention with proven results.” Source: company website · checked Sep 3, 2026
17	HP Law, LLCStrong evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	11-50	7
	“We are a boutique law firm providing concierge legal service to employers and insurance companies in Pennsylvania and New Jersey.” Source: company website · checked Sep 3, 2026
18	Golkow Hessel, LLCPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	6
	“Golkow Hessel, LLC is a personal injury law firm based in Philadelphia, PA.” Source: company website · checked Sep 3, 2026
19	Marks, O'neill, O'brien, Doherty & Kelly, P.CStrong evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	6
	“We are a regional insurance defense law firm with offices in Philadelphia, Pittsburgh, New Jersey, New York, Delaware and Maryland.” Source: company website · checked Sep 3, 2026
20	Seltzer & Associates, P.CIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	6
	“The experienced team at Seltzer & Associates is nationally recognized for excellence in achieving quick, favorable results on behalf of professionals and executives filing…” Source: company website · checked Sep 3, 2026
21	Gaul & Associates, P.CPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	5
	“At Gaul & Associates, we have one simple goal: getting more money for insurance professionals in less time.” Source: company website · checked Sep 3, 2026
22	Boonswang LAW Firm, LLCStrong evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	5
	“Based in Philadelphia and serving clients across the country, Boonswang Law focuses on life insurance and catastrophic personal injury claims.” Source: company website · checked Sep 3, 2026
23	Schaff & Young, PCIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	1-10	5
	“We founded our firm, Schaff & Young, PC, more than a decade ago with a specific vision.” Source: company website · checked Sep 3, 2026

Showing 23 of 66 insurance defense law firms based in Philadelphia, United States

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Insurance defense law firms based in Philadelphia, United States at a glance

As of Sep 3, 2026

11-50Median size (employees)

New YorkLargest hub · 227 HQs

Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 66 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 insurance defense law 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 Philadelphia, United States whose own description of what they do matches “insurance defense law 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 insurance defense law firms, and records with no verified work email. Companies headquartered outside Philadelphia 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, 821 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 3, 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.

Insurance defense law firms by metro in the United States

Frequently asked

How many insurance defense law firms are there based in Philadelphia, United States?

RevenueBase identified 66 insurance defense law firms headquartered in Philadelphia, 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?

Marshall Dennehey, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most insurance defense law firms?

New York leads with 227 headquartered companies, followed by Houston (180) and Chicago (146).

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 821 verified decision-maker contacts tracked across these 66 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 3, 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.