Company lists · Data refreshed September 2026
Top 25 Clinical trial law firms based in Philadelphia, United States
RevenueBase identified 48 clinical trial law firms headquartered in Philadelphia, United States as of September 2026 and tracks 885 professional contacts across them, including 524 with verified work emails. Across the United States, Houston is the largest hub for this category (95 companies); Philadelphia has 48.
This list covers clinical trial 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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.
The 25 largest clinical trial law firms based in Philadelphia, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 215 contacts → | ||||
Partial evidence “A Philadelphia-based law firm handling wrongful injury lawsuits, including medical malpractice, product liability, premises liability, civil rights and auto accident litigation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 204 contacts → | ||||
Strong evidence “Rawle & Henderson, LLP, is a Mid-Atlantic regional law firm whose attorneys engage in civil trial litigation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 90 contacts → | ||||
Indirect evidence “Anapol Weiss has represented victims of negligence for more than 40 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 61 contacts → | ||||
Strong evidence “The Locks Law Firm is a premier plaintiff's trial firm, litigating cases in Pennsylvania, New Jersey, New York, and the rest of the nation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 32 contacts → | ||||
Indirect evidence “For over four decades, the lawyers at Cohen, Placitella & Roth have brought an unwavering commitment and dedication to the legal representation of individuals and families…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 28 contacts → | ||||
Partial evidence “VSCP LAW is dedicated to providing the highest-caliber legal representation to individuals and families that have been devastated by catastrophic injuries caused by the wrongdoing…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 25 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 24 contacts → | ||||
Indirect evidence “Facet Life Sciences is a trusted, award-winning regulatory affairs and product development consulting firm, purpose-built for small life science companies.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 15 contacts → | ||||
Indirect evidence “Welcome to Lopez McHugh, LLP When you purchase goods or services, especially medical devices and prescription drugs, you’d like to think the provider has your best interests at…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Partial evidence “Founded in 2009, Green & Schafle is a boutique law firm based in Philadelphia that offers a more personalized and open approach to legal matters, including vaccine injury cases…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Indirect evidence “It takes a very special range of skills to win highly complex suits involving multiple parties and theories.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Indirect evidence “Look out, Goliath!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Strong evidence “Haines Law (formerly Haines & Associates is built on a foundation of robust courtroom readiness, reflecting our national reputation for handling and thriving in high-stakes trial…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence “Specializing in mass tort, whistleblower, product liability, defective drugs, motor vehicle, class action, and medical malpractice litigation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Indirect evidence “Youman & Caputo, LLC represents catastrophic injury victims in Pennsylvania and New Jersey and government fraud whistleblowers nationwide.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Indirect evidence “Levin Sedran & Berman represents plaintiffs in complex cases on both a national and local level.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Strong evidence “Looking for best-in-class clinical trial statistical support for your new medical device or drug?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 contacts → | ||||
Partial evidence “NastLaw is a national law firm based in Philadelphia that provides clients with experienced, confident representation in the most difficult cases.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Partial evidence “Golkow Hessel, LLC is a personal injury law firm based in Philadelphia, PA.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 6 contacts → | ||||
Partial evidence “With more than 25 years of trial experience in Philadelphia, Pennsylvania, throughout Pennsylvania and New Jersey, and nationwide, Eric H.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Partial evidence “Based in Philadelphia and serving clients across the country, Boonswang Law focuses on life insurance and catastrophic personal injury claims.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Partial evidence “We are aggressive civil trial lawyers.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 contacts → | ||||
Partial evidence “Decades of experience and strong relationships are at the core of the Marrone Law Firm’s practice.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: clinical trial law 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 clinical trial law firms.
- Partial evidence
- Its own public description names part of clinical trial law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name clinical trial law 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 48 clinical trial law firms based in Philadelphia, United States
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Clinical trial law firms based in Philadelphia, United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Philadelphia, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 48 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 clinical trial law 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 Philadelphia, United States whose own description of what they do matches “clinical trial law 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 clinical trial law 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 clinical trial 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 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, 524 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 27, 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.
Clinical trial law firms by metro in the United States
- Clinical trial law firms in Houston95
- Clinical trial law firms in Chicago77
- Clinical trial law firms in New York75
- Clinical trial law firms in Atlanta68
- Clinical trial law firms in Miami58
- Clinical trial law firms in Dallas48
- Clinical trial law firms in Los Angeles45
- Clinical trial law firms in San Diego41
- Clinical trial law firms in Washington39
- Clinical trial law firms in Boston38
- Clinical trial law firms in Tampa34
- Clinical trial law firms in San Francisco31
- Clinical trial law firms in Austin27
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 clinical trial law 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 clinical trial law firms are there based in Philadelphia, United States?
RevenueBase identified 48 clinical trial 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?
Kline & Specter, PC, headquartered in Philadelphia, tops this list with the largest team on record.
Which city in the United States has the most clinical trial law firms?
Houston leads the United States with 95 headquartered companies, followed by Chicago (77) and New York (75). Philadelphia has 48.
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 524 verified decision-maker contacts tracked across these 48 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 27, 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.
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