Washington Personal Injury Attorney With 40 Years Of Trial Experience
Serving Olympia, Okanogan, King, Yakima, Chilean, and Clark Counties, & clients across Washington State.
If you’ve been seriously injured, you need an attorney who knows how to win, not just settle.
If you’ve been injured due to someone else’s negligence, you’re likely dealing with more than just physical pain. Medical bills, missed work, and uncertainty about what comes next can quickly become overwhelming.
Insurance companies understand this, and they use it to their advantage.
John McMahon has been practicing law since 1989, with experience handling serious cases, negotiating with insurance companies, and taking cases to trial when necessary.
He does not run a high-volume firm. He handles cases personally, communicates directly with clients, and prepares every case as if it may go to trial.
Washington Car Accident Lawyer
Washington personal injury attorney with a proven track record.
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After a serious accident, you’re up against insurance companies trained to minimize what they pay. At the same time, you’re dealing with medical bills, missed work, and uncertainty about your future.
John McMahon has been representing injury victims since 1989. He now works across multiple counties in Washington State helping injury victims get the results they deserve. He handles cases personally, prepares them for trial when necessary, and focuses on securing the full compensation his clients are entitled to.
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If you’ve been injured in an accident, the decisions you make early on can have a lasting impact on your recovery, both physically and financially.
Our firm represents individuals across Olympia, Okanogan, King, Yakima, Chilean, and Clark Counties, & clients across Washington State. We work with anyone who has been injured due to someone else’s negligence. From car accidents to serious injury claims, we pursue full compensation for medical expenses, lost income, long-term care, and the broader impact the injury has had on your life.
Insurance companies often try to resolve claims quickly and for less than they’re worth. Having an experienced trial attorney on your side can make a significant difference in how your case is evaluated, negotiated, and, if necessary, presented in court.
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With nearly 40 years of experience practicing personal injury law, John McMahon has built a reputation for strong advocacy, strategic case preparation, and results that stand up against insurance companies.
Clients work directly with an experienced attorney, not passed between departments or treated like a case number. Every case receives personal attention, clear communication, and a commitment to achieving the best possible outcome.
Serving Clients Throughout Washington State
Seattle • Tacoma • Spokane • Bellevue • Vancouver • Wenatchee • Omak
Practice areas
Legal representation backed by real trial experience.
Car Accidents
Serious injuries often result from motor vehicle accidents caused by negligent drivers. We represent clients across Washington State, including Olympia and Okanogan County, pursuing compensation for medical expenses, lost income, and the long-term impact of the injury.
Serious Personal Injury
When injuries have lasting consequences, you need an attorney who understands both the medical and financial impact. We handle complex injury cases involving significant harm, working to secure full and fair compensation for our clients.
Wrongful Death
Families who lose a loved one due to negligence deserve accountability. We represent clients in wrongful death claims throughout Washington, helping families pursue financial recovery and a measure of justice during a difficult time.
Personal Injury Litigation
When insurance companies refuse to offer fair compensation, we are fully prepared to take cases to court. With extensive trial experience, we advocate aggressively to protect our clients’ interests and maximize case outcomes.
WHY CLIENTS TRUST JOHN MCMAHON
Injured in an accident? Get clear answers and experienced legal representation.
Experienced Trial Attorney
With nearly 40 years of personal injury experience, John McMahon understands how insurance companies evaluate claims and how cases are presented in court. His extensive jury trial background allows him to prepare every case strategically and pursue the strongest possible outcome.
Focused on Maximum Compensation
Insurance companies are profit-driven and often attempt to settle claims quickly for less than they are worth. This firm works to pursue full compensation for medical expenses, lost income, and the long-term impact of serious injuries, not just what is easiest to resolve.
Personal Attention to Every Case
Clients work directly with an experienced attorney who prioritizes communication, keeping them informed and educated throughout the entire process. Every case is handled with patience, respect, and a commitment to achieving the best possible result.

HOW OUR PERSONAL INJURY PROCESS WORKS
What to expect when you work with an experienced injury attorney.
After a serious accident, it’s common to feel overwhelmed by medical bills, insurance adjusters, and uncertainty about your legal rights.
Our approach is focused on providing clear, straightforward guidance from the very beginning. You’ll understand your options, what to expect, and how your case will move forward, without confusion or unnecessary pressure.
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With Lisa Lang,
Legal Secretary
Tell us about your accident
Start with a free consultation. You can call our office or submit a contact form to explain what happened and ask questions about your situation.
During this conversation, you’ll receive an honest, straightforward assessment of your case and whether you may have a valid personal injury claim.
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Understand your legal options
After reviewing your situation, we explain your legal options and the next steps in clear, practical terms.
You’ll gain a full understanding of how the process works, what compensation may be available, and how your case may proceed, so you can make informed decisions with confidence.
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We handle the legal process
If you choose to move forward, we handle every aspect of your case, including investigating the accident, gathering evidence, negotiating with insurance companies, and preparing the case for settlement or trial.
You can focus on your recovery while we focus on protecting your rights and pursuing the best possible outcome.
Testimonials
Real stories, real results.

“I felt completely overwhelmed before reaching out, but the team explained every step in a way I could actually understand. Their advice was practical, honest, and exactly what I needed to make the right decisions.”
— Elena M.
Our team
Meet the minds behind the Washington Accident Law Center
John McMahon
Personal Injury Lawyer
Lisa Lang
Legal Secretary
Resources
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