Insights

Expansion & Talent The firm is actively expanding its team across multiple states including Tampa, Harrisburg, Philadelphia, Wilmington, and Pittsburgh with new special counsel and shareholder hires, signaling growth opportunities for sales conversations around enterprise clients and insurers seeking robust civil defense capabilities.

Insurance & Defense Focus Marshall Dennehey specializes in representing insurers, self-insureds, and professionals in a broad range of liability and workers' compensation matters, presenting a clear sales path to insurance carriers and risk managers seeking defense and coverage counsel.

Industry Coverage Breadth With practice areas spanning health care, employment, product liability, environmental, IT and data privacy, and complex litigation, there are cross-sell opportunities across diverse client portfolios including healthcare providers, manufacturers, tech firms, and financial services.

Regional Footprint A 19-office presence across PA, NJ, DE, CT, OH, NY, and FL enables regionally tailored services and quick deployment for multinational insurers or multistate clients seeking consistent civil defense strategies.

Digital Modernization Recent website launch and ongoing tech stack investments (Drupal/WordPress, Microsoft 365, Azure AD, data analytics) indicate readiness to support client portals, matter management, and data-driven insights for large accounts and corporate legal departments.

Similar companies to Marshall Dennehey

Marshall Dennehey Tech Stack

Marshall Dennehey uses 8 technology products and services including Drupal, WordPress, Microsoft SQL Server, and more. Explore Marshall Dennehey's tech stack below.

Media & News

Marshall Dennehey's Email Address Formats

Marshall Dennehey uses at least 8 email formats:
Marshall Dennehey Email FormatsExamplePercentage
First.Last@marshalldennehey.comJohn.Doe@marshalldennehey.com
94%
First@marshalldennehey.comJohn@marshalldennehey.com
3%
Last@marshalldennehey.comDoe@marshalldennehey.com
2%
FLast@marshalldennehey.comJDoe@marshalldennehey.com
1%
FLast@mdwcg.comJDoe@mdwcg.com
76%
FMLast@mdwcg.comJMDoe@mdwcg.com
11%
FiLast@mdwcg.comJoDoe@mdwcg.com
8%
First.Last@mdwcg.comJohn.Doe@mdwcg.com
5%

Frequently Asked Questions

What is Marshall Dennehey's phone number?

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You can contact Marshall Dennehey's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Marshall Dennehey's official website and social media links?

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Marshall Dennehey's official website is marshalldennehey.com and has social profiles on LinkedIn.

How much revenue does Marshall Dennehey generate?

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As of August 2026, Marshall Dennehey's annual revenue is estimated to be $250M - $500M.

What is Marshall Dennehey's NAICS code?

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Marshall Dennehey's NAICS code is 54111 - Offices of Lawyers.

How many employees does Marshall Dennehey have currently?

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As of August 2026, Marshall Dennehey has approximately 1.3K employees across 4 continents, including North America, Asia and Africa. Key team members include Chief Executive Officer: J. S., Chief Executive Officer And Founder: J. W. and President: G. W. Explore Marshall Dennehey's employee directory with LeadIQ.

What industry does Marshall Dennehey belong to?

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Marshall Dennehey operates in the Law Practice industry.

What technology does Marshall Dennehey use?

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Marshall Dennehey's tech stack includes Drupal, WordPress, Microsoft SQL Server, Microsoft 365, Azure Active Directory, Cisco, Vimeo and Piwik PRO Core.

What is Marshall Dennehey's email format?

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Marshall Dennehey's email format typically follows the pattern of First.Last@marshalldennehey.com. Find more Marshall Dennehey email formats with LeadIQ.

When was Marshall Dennehey founded?

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Marshall Dennehey was founded in 1962.
Marshall Dennehey logo

Marshall Dennehey

Law PracticePennsylvania, United States1001-5000 Employees

Marshall Dennehey Warner Coleman & Goggin, P.C. is a law practice specializing in civil defense litigation, founded in 1962 and headquartered at 2000 Market Street, 23rd Floor, Philadelphia, PA 19103. The firm represents insurers, self-insured businesses, and professionals across areas including professional liability, casualty, health care, employment, and workers' compensation. It operates with about 500 attorneys in 19 offices located across Pennsylvania, New Jersey, Delaware, Connecticut, Ohio, New York, and Florida, enabling regional client service. The practice encompasses a broad array of areas, such as automobile liability, product liability, environmental and toxic tort, and insurance coverage/bad faith, among others. The organization employs between 1,001 and 5,000 people and maintains a website at marshalldennehey.com.

Section iconCompany Overview

Phone number
NAICS Code
54111 - Offices of Lawyers
Founded
1962
Employees
1001-5000

Section iconFunding & Financials

  • $250M - $500M

    Marshall Dennehey's revenue is estimated to be in the range of $250M - $500M

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