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

1,038 Profile Views

Ignacio Mitchell-Balistreri

Feb 02, 2026

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

Diane M. Johnsen has been doing this since Recognized in Best Lawyers since 2005, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal...

Lorraine Kirlin

Feb 02, 2026

Diane M. Johnsen did a great job handling my complex Appellate Practice law case from start to finish

Needed help with Appellate Practice law and Diane M. Johnsen delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Arizona looking for high-quali...

Margarita Thiel

Feb 02, 2026

Would recommend Diane M. Johnsen for sure to anyone in Phoenix needing legal help

Latoya Quigley

Feb 02, 2026

The absolute best in Phoenix for Appellate Practice law - and I mean that from the bottom of my heart

If you're looking for someone who actually cares and will fight for you, go to Diane M. Johnsen. They helped me out big time with my Appellate Practice law issue and kept me informed at every step of...

Susan Wolff

Feb 02, 2026

Excellent legal representation provided by Diane M. Johnsen for my Appellate Practice law case

Diane M. Johnsen is fantastic and very professional. Don't hesitate to hire them if you're in Arizona and need help. They really know their stuff and will go the extra mile to make sure you're taken c...