Dan serves as the chair of the Environmental & Toxic Tort Practice Group in the Philadelphia office of Marshall Dennehey Warner Coleman & Goggin. In this capacity he is responsible for the oversight of a group of attorneys who focus on toxic tort litigation. He also supervises the representation of many defendants in asbestos litigation throughout Pennsylvania. Dan also concentrates a portion of his practice to defending insurers in bad faith litigation.
In addition to close to 30 years of trial experience in toxic tort litigation on behalf of asbestos manufacturers, Dan has also developed an extensive involvement in lead paint litigation on behalf of building owners and has also tried auto, premises, exercise equipment and various other product liability claims, representing manufacturers and insurers. As an alternative to litigating matters, Dan has extensive participation in various types of mediation and alternative dispute resolution.
Adding to his law practice, Dan has given lectures and seminars concerning the defense in mass tort litigation with particular emphasis on alternative, cost effective ways for processing large volumes of cases. He has also lectured on the defense of bad faith cases for the Insurance Society of Philadelphia's Continuing Legal Education program as well as to the staffs of insurers.
Honors & awards
AV Preeminent by Martindale-Hubbell
The Best Lawyers in America, Philadelphia, 'Lawyer of the Year' - Personal Injury Litigation - Defendants
2021
The Best Lawyers in America, Personal Injury Litigation - Defendants
2009-2026
Pennsylvania Super Lawyers
2006, 2009-2025
Year joined
1977
Thought Leadership
98 Marshall Dennehey Attorneys Recognized in the 2026 Editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America
August 20, 2025
Marshall Dennehey is proud to highlight the firm’s 98 attorneys who have been recognized in the 2026 editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America. Less than 6% of all practicing lawyers in the U.S.
Marshall Dennehey Announces 2025 Pennsylvania Super Lawyers and Rising Stars
May 22, 2025
Thirty-three attorneys across Marshall Dennehey's five Pennsylvania offices have been selected to the 2025 edition of Pennsylvania Super Lawyers magazine.
Marshall Dennehey Announces 2024 Pennsylvania Super Lawyers and Rising Stars
May 17, 2024
Twenty-eight attorneys across Marshall Dennehey's six Pennsylvania offices have been selected to the 2024 edition of Pennsylvania Super Lawyers magazine.
Marshall Dennehey Announces 2022 Pennsylvania Super Lawyers and Rising Stars
May 23, 2022
Thirty-four attorneys across Marshall Dennehey's six Pennsylvania offices have been selected to the 2022 edition of Pennsylvania Super Lawyers magazine.
Classes/Seminars Taught
Handling UM/UIM Cases in Pennsylvania, Marshall Dennehey Client Webinar, May, 2021
Annual presentations to various clients groups regarding the status of asbestos litigation in Pennsylvania involving strategies for defending various types of products such as brakes, tile, caulk, joint compound, boilers, wire, pumps and packing.
Presented several in-house presentations to various insurers as to how to avoid bad faith litigation in Pennsylvania while handling first party claims.