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

1,037 Profile Views

Brenda Williamson

Feb 02, 2026

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

I didn't think I'd find such a good lawyer in Arizona, but here we are and I am thoroughly impressed. Diane M. Johnsen is just awesome and exceeded all my expectations. No complaints at all! They real...

Hector Champlin

Feb 02, 2026

Really helpful and compassionate service from everyone at Diane M. Johnsen's firm

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...

Israel Homenick

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...

Lorene Sporer-Cremin

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...

Max Legros

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...