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

Contact Me

Login Required

Please login to contact this attorney

Reviews

4.4 / 5

40 Reviews

1,040 Profile Views

Lynne Dooley

Feb 02, 2026

So glad I called Diane M. Johnsen to handle my Appellate Practice law case in Phoenix

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...

Inez Conroy

Feb 02, 2026

So happy with the results of my case thanks to the hard work of Diane M. Johnsen and staff

Short and sweet: Diane M. Johnsen is the real deal and a true professional in the field of Appellate Practice law. If you're in Phoenix and need help with your legal issues, call them immediately. You...

Pete Ebert

Feb 02, 2026

Top notch experts in Phoenix - Diane M. Johnsen is by far the best lawyer I've ever had

Really glad I found Diane M. Johnsen for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in...

Marguerite Ryan

Feb 02, 2026

Absolutely Great! I couldn't be happier with the service from Diane M. Johnsen

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...

Muriel Streich

Feb 02, 2026

Simply amazing representation from Diane M. Johnsen's office during my recent legal matter

Honestly, I can't thank Diane M. Johnsen enough for everything they've done for me. They really know their stuff when it comes to Appellate Practice law and it shows in the results. 10/10 would recomm...