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Diane M. Johnsen


Perkins Coie LLP

Recognized since 2005

Phoenix, Arizona

Practice Areas

Appellate Practice

Commercial Litigation

Environmental Law

Lawyer of the Year Badge - 2026 - Appellate Practice
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Lawyer of the Year Badge - 2026 - Appellate Practice
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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.

Location
  • 2525 E. Camelback Road, Suite 500
    Phoenix, AZ 85016-4227
Education
  • Duke University, J.D., graduated 2016

Perkins Coie LLP
Headquarters: Seattle, Washington

239 The Best Lawyers in America® awards

353 Best Lawyers: Ones to Watch® in America awards

Best Law Firms Badge Visit Website View Firm Profile

Lawyer of the Year Badge - 2026 - Appellate Practice
Named "Lawyer of the Year" by Best Lawyers® for:
  • Appellate Practice, Phoenix (2026)
Recognized in The Best Lawyers in America® 2026 for work in:
  • Appellate Practice
  • Commercial Litigation
  • Environmental Law
Special Focus:
  • Environmental

Publications

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