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Diane Mar Wiesmann

Diane Wiesmann served the community as a Deputy District Attorney for Riverside County from 1986-1989. Thereafter, she entered private practice in civil litigation defense, developing an interest in healthcare provider defense and advising. She handles jury trials, court trials, mediations and arbitrations.

Professional Affiliations:

  • Association of Southern California Defense Counsel (President 2012)
  • Federation of Defense and Corporate Counsel
  • Leo A. Deegan Inns of Court
  • Defense Research Institute
  • Southern California Association For Healthcare Risk Management
  • Riverside County Bar Association
  • American Red Cross, Riverside Chapter (Board of Directors)
  • Member, Bench-Bar Coalition


  • BA with Honors, University of Arizona, English, 1983
  • JD, University of Arizona School of Law, 1986

Bar Admissions:

  • California, 1986
  • U.S. District Court, California, 2000

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