Specializing in Insurance Coverage, Personal Injury, Immigration, Medical Malpractice, & Toxic Torts 






McMahon, Martine, & Gallagher, LLP draws on a depth of experience, diversity, rich traditions and history. MMG is a solution-oriented civil litigation law firm, committed to providing exceptional legal advice and representation to national and multi-national insurance companies as well as self-insured businesses and professionals with litigation matters in New York, New Jersey and Pennsylvania. With more than sixty years of dedicated insurance defense and insurance coverage experience, MMG has the ability to effectively handle the most complex tort liability matters as well as insurance coverage disputes.  MMG defends clients in a wide range of lawsuits including construction accident liability, premises liability, medical malpractice, legal malpractice, toxic torts, products liability, commercial (trucks and buses) automobile liability, and homeowner and personal automobile liability. MMG is devoted to meeting the legal needs of the insurance industry and self-insured businesses and professionals. Our attorneys are prepared to work with our clients to resolve any liability or insurance dispute through consultation, negotiation, arbitration, mediation or litigation.


Since 1958, MMG has forged a reputation as a formidable player in insurance coverage and defense. Our firm's experience in this tightly regulated, cost-conscious industry has shaped a firm culture of accomplishment and cost efficiency that consistently delivers real value to clients.


Walter McMahon and Lou Martine founded the Firm in 1958, and after McMahon’s untimely passing, the Firm continued to build its reputation for success with integrity under the leadership of Lou and William Gallagher. Today, led by Anthony Martine, Timothy Gallagher and Aoife Reid, MMG is better equipped than ever with experience and resources to serve the needs of clients in the metropolitan New York area, New Jersey and Philadelphia. 



McMahon, Martine & Gallagher, LLP (“MMG”) has been continuously monitoring the situation regarding COVID-19 (Coronavirus) through guidance from the CDC and WHO, government officials, and state and local public health departments. For the safety of our staff and our communities, MMG has implemented a  hybrid working modality.  In deploying our business continuity plan, we have been actively monitoring potential vendor risks and working closely with our outside partners to understand their pandemic planning and response plans.

Our personnel are working both in the office and from home and we remain “open for business”.  While courts have limited appearances, all attorneys and staff are fully focused on advocating for our clients.

We will continue employing leading technology solutions for videoconference meetings, depositions, mediations and other matters as appropriate and necessary. Our leadership is committed to communicating with our clients, the courts, and counsel with the goal of continuing to advance matters under the prevailing conditions.



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Main Office

55 Washington Street, Suite 720
Brooklyn, NY  11201


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Trenton, NJ

404 Market Street
Trenton, NJ  08611


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