Northern California Criminal Defense Attorneys Serving Sonoma, Napa, Marin, Lake, Mendocino, and Humboldt Counties

Arrested for a DUI or other crime? Get aggressive, professional, and successful help from a DUI lawyer or criminal attorney with the law firm that serves more clients in DUI and criminal cases than any other law firm north of the Golden Gate Bridge. An experienced criminal defense attorney will get the best result possible in your case by helping you generate the best defenses, avoid going to court, protecting your license and job, and acquiring, if necessary, alternatives to jail.
Our Northern California law firm has over 150 years of combined experience handling criminal and DUI cases. We are centrally located with offices in Santa Rosa, Napa, San Rafael, Lakeport, Ukiah, and Eureka. We welcome all questions or inquiries and will answer them in a pleasant, courteous, and helpful manner.
If you have been arrested or are under investigation, call Ronald Dinan & Associates now. We welcome all questions or inquiries and will answer them in a pleasant, courteous, and helpful manner. To speak to an attorney, call us today at (888) 563-6268 !

About Us

We Handle a Variety of Criminal Defense Cases

Excellent Representation from an Accomplished Firm
  • DUI Defense

    Get Important Information on Drunk Driving
    The more you know about your rights, the better your defense and results!

  • Criminal Defense

    12,000+ Criminal Cases Resolved
    Learn about the required elements of your criminal charges and be pro active in your defense

  • California Crimes

    About California’s Criminal Laws
    From misdemeanors to felonies, we handle all criminal cases under California’s Penal Code.

Get Answers
to Important DUI Questions

  • I have been arrested for a DUI! What do I do now?
  • Now I have a DUI criminal case - what's going on?
  • Can the DMV or the court really take my license?
  • What is the 10 day rule in regards to DUI cases?
  • What issues should I look for in my case?
  • What can an expert DUI lawyer do for me?

If you're facing criminal charges, one of the best decisions you can make is to speak to our attorneys. With our main office in Santa Rosa, our practice concentrates in the counties of Sonoma, Napa, Marin, Lake, Mendocino, and Humboldt, and our six Bay Area offices are centrally located in the cities in which the courthouses are located.

Defense for DUI Charges in Northern California

If you have been arrested for a DUI, contact an experienced DUI attorney as soon as possible. There are a number of steps that can be taken by both you and your attorney to substantially improve your situation. Most likely, you will have to deal with both the criminal court and DMV. Your attorney will explain this to you in detail.

In most cases, we appear in criminal court on behalf of our clients to prevent a DUI matter from interfering with your work, personal obligations, etc. In addition, our representation includes speaking on your behalf and negotiating with DMV hearing officers, judges, and district attorneys.

Our Reviews Say It All

Hear What Our Clients Are Saying
  • “Their brief account of the facts were indisputable and their ability to convey this to the court unmistakable. Our most sincere thanks.”

    M.J.

  • “Ron and his crew answered the call and helped me out - especially helpful since I was not local. Saved not only my Holiday weekend - but also my record!”

    Keith Sweeney

  • “CB was assigned to be my attorney. Her research and communication with me was excellent. We won my case. Not guilty!”

    P.D.

  • “Ron, you can be sure that anytime I come in contact with someone who is looking for a criminal lawyer, you are the only name I am going to suggest.”

    Chris Diaz

  • “He and his staff took care of the case , got the charges dismissed. Returned my phone calls when I had a question. He did a great job”

    Bill R

  • “They are thoughtful and work hard to make sure that what you want is what you get. THANKS GUYS!”

    M.E.

  • “This firm is the absolute best and we will send anybody we meet who has a criminal problem to you. Thanks again.”

    D.N.

  • “Not only did they help in winning my case, but they gave great advice!”

    E.M.

  • “Ronald Dinan & Associates were terrific because they knew exactly what my case was about and thought out every action extremely well.”

    E.M.