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Serving Northern Arizona with clear guidance, personal attention, and more than 15 years of legal experience in our community.

Law Office of Matthew J. Poirier, PLLC

Flagstaff Personal Injury and Criminal Defense Attorney

Guidance That Helps You Feel Steady and In Control

Your legal situation may feel overwhelming right now, whether you’re recovering from an accident or facing a criminal charge in Flagstaff. You’re not alone—many people in Northern Arizona deal with the stress of injuries, insurance pressure, NAU student issues, or unexpected charges every year. With 15+ years serving this region, the Law Office of Matthew J. Poirier, PLLC offers local insight shaped by real experience in Coconino County courts and across federal lands. From cases in Sedona, Williams, Page, Tuba City, and Winslow, we understand the challenges unique to this area and help you move forward with clarity.

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When Everything Feels Urgent, You Get Real Answers

Life feels lighter the moment someone helps you make sense of what’s happening. With the Law Office of Matthew J. Poirier, PLLC guiding each step, these benefits help your next move feel possible and grounded in real local experience.

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Direct Support From Your Attorney

You get individualized attention from an attorney who handles your case personally, helping you feel informed rather than lost in the process.

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Experience Across Northern Arizona

From I-40 and I-17 accidents to NAU student cases and federal land incidents, regional familiarity helps you understand what to expect and what to do next.

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Clear Expectations and Honest Guidance

When you’re unsure what steps to take, a straightforward, supportive approach helps cut through confusion quickly.

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Financial Relief When You Need It Most

For injury cases, there’s no fee unless compensation is won, reducing stress during an already difficult time.

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Trusted by Clients Across Northern Arizona

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Services That Bring Order to Difficult Moments

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Personal Injury

When an accident turns your life upside down, understanding your options can feel difficult. You’ll see where your case stands and what steps can move things forward, supported by years of knowledge handling Northern Arizona injuries.

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Criminal Defense

Facing charges—whether DUI, drug-related, or a disorderly conduct issue—can feel isolating and urgent. You’ll get clear, steady guidance shaped by years in Coconino County courts.

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Auto & Truck Accidents

Flagstaff’s I-40 and I-17 corridors create real dangers for both locals and visitors. Understanding those patterns helps you navigate the aftermath more confidently.

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DUI Defense (Including NAU Students & Visitors)

Whether you’re a student, a tourist, or a local resident, DUI charges come with immediate concerns. You’ll receive grounded direction shaped by extensive experience with Arizona DUI laws.

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Vacation & Tourist Injuries

Accidents at the Grand Canyon, Sedona, or other Northern Arizona destinations leave many visitors unsure of what to do next. You’ll know your rights and what steps to take from anywhere in the country.

Who We Serve

The People We Serve

Injury Victims in Northern Arizona

Accidents on highways, trails, and tourist destinations can disrupt everything. You’ll get help understanding your options and a clear plan to move forward.


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Locals, Students, and Visitors Facing Charges

Criminal charges can feel confusing, especially with Arizona-specific rules. You’ll get grounded support and direction shaped by deep local experience.


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Get Answers Before Your Situation Gets More Complicated

People across Northern Arizona come to the Law Office of Matthew J. Poirier, PLLC when they’re ready for clear guidance and steady support. Let’s talk about what’s going on and take the next step together.