• DUI Defense

    Get Important Information on Drunk Driving

    The more you know about your rights, options, and defenses, the better your final results can be!

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  • Criminal Defense

    12,000+ Criminal Cases Resolved

    Learn about the required elements of your criminal charges and be pro active in your defense

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  • California Crimes

    About California’s Criminal Laws

    From misdemeanors to felonies, we handle all types of criminal cases under California’s Penal Code.

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Why Choose Ronald Dinan & Associates?

When you retain the Northern California lawyers at Ronald Dinan & Associates, you benefit from having a team of trusted and experienced criminal defense attorneys on your side. Our firm serves more clients in DUI and criminal cases than any other law firm north of the Golden State Bridge. We are a team who carefully and diligently work each and every case to provide you with the best defense possible.

More Than 150 Years of Combined Experience

The team at Ronald Dinan & Associates has extensive experience in DUI and criminal cases. They have been able to resolve more than 12,000 criminal cases in the course of their careers.

Our firm has conveniently located offices in six counties north of the Golden Gate Bridge, including in the following counties and cities:

County: Cities: Local Phone number:
Sonoma County Santa Rosa 707-571-5550
Napa County Napa 707-252-0102
Mendocino County UKiah 707-462-5950
Humbolt County Eureka 707-445-1348
Marin County San Rafael 415-491-0223
Lake County Lakeport 707-262-0503

We Are Involved in Every Aspect of Your Case

We understand that your criminal matter is extremely personal and that your future is at stake. Our personal philosophy is to handle every single case as if it were our own. We take your case very seriously and will do all that can be done to improve your situation.

We believe in being very proactive and will be thoroughly involved during your entire case, from the initial investigation through the final outcome. Our focus is to have your case dismissed, have your charges reduced, mitigate any sentencing requirements and, in short, do all that can be done to get you the best result possible. We offer free initial consultations so that we can get to know you and you can tell us about your case free of charge.

We Handle a Variety of Criminal Defense Cases

We handle probation violation cases and can help clients prior to arrest to defend them during pre-arrest investigations. We also help with bench and arrest warrant defense and can help clients who are now facing bench warrants for failing to appear at their original court dates. We understand that your journey may start even before you are arrested, which is why we can get to work on your case right from the start and negotiate with the prosecution.

We can also attend your Department of Motor Vehicles hearing if your license is revoked in your DUI or criminal case. We make your case a priority, which is why we offer clients a 24/7 DUI Help Line and have convenient office locations in Santa Rosa, Lakeport, Eureka, Napa, Ukiah, and San Rafael. You can call or visit our offices at any time for information on DUI cases.

Praised by Clients

Ronald Dinan & Associates is praised by clients who have worked with our Sonoma County and Napa County criminal defense attorneys. We come highly recommended. Our lawyers have been described as "the absolute best" and "terrific. " Past clients also have said that we were "extremely well prepared" and that we take the time to thoroughly research and investigate each case. If you are looking for a skilled attorney, don't hesitate to call our firm!

We proudly serve the Sonoma, Napa, Marin, Lake, Mendocino, and Humboldt County areas.

Ronald Dinan & Associates, Attorneys & Lawyers, Santa Rosa, CA