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

1,039 Profile Views

Alison Goyette

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...

Brenda Ernser

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...

Jenny Dare-Weissnat

Feb 02, 2026

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

Solid experience overall with the law firm of Diane M. Johnsen. They know Appellate Practice law inside and out and gave me great advice. Very helpful and got the job done exactly as they said they wo...

Anna Robel

Feb 02, 2026

Many thanks to Diane M. Johnsen for the hard work and dedication to my legal matter

Maxine Witting

Feb 02, 2026

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

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...