Diane M. Johnsen

4.4 (40 reviews )

Phoenix Arizona United States

Appellate Practice Commercial Litigation Environmental Law

Recognized in Best Attorney USA since 2005

602-351-8000 Website

About Diane

Diane M. Johnsen is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Environmental Law.Diane M., who practices law in Phoenix, Arizona, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane M. is held by other top lawyers in the same geographic and legal practice area.

Diane M. Johnsen is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation and Environmental Law.

Diane M., who practices law in Phoenix, Arizona, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane M. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Appellate Practice

Commercial Litigation

Environmental Law

Education

Duke University

Awards & Recognition

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Reviews

4.4 / 5

40 Reviews

1,042 Profile Views

Eric Schulist

Feb 02, 2026

Five stars for the incredible team at Diane M. Johnsen in Phoenix - they are amazing

If you need a Appellate Practice law lawyer, Diane M. Johnsen is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my case. I...

Bonnie Rosenbaum

Feb 02, 2026

A very good experience overall with the entire team at Diane M. Johnsen's legal practice

It's hard finding a reliable lawyer these days, but Diane M. Johnsen in Phoenix is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, responsive...

Andres Grady

Feb 02, 2026

A huge weight off my shoulders thanks to the amazing work of Diane M. Johnsen

I wasn't sure who to call for my Appellate Practice law problem, but I'm so glad I went with Diane M. Johnsen. They really listened to me and understood my situation. It was such a relief to have some...

Edmond Thiel

Feb 02, 2026

Solid work and professional service from Diane M. Johnsen in Phoenix for Arizona residents

I appreciate how Diane M. Johnsen handled my case. No fluff, just straight to the point and very effective representation for my Appellate Practice law matter. They are obviously very experienced and...

Freddie Mitchell

Feb 02, 2026

Great people who truly care at Diane M. Johnsen - the best legal team in Arizona

I've already told all my friends and family about Diane M. Johnsen. If you need Appellate Practice law help in Arizona, they're the ones to see without any doubt. They are local experts who really und...