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William P. Cassidy


An associate in Conroy Simberg’s Jacksonville office, William P. Cassidy’s legal practice is focused on liability matters including insurance defense, automobile liability, premises liability, SIU/PIP, and construction defect litigation. Prior to joining the firm, he worked as an Assistant State Attorney in the Fourth Judicial Circuit and as an Associate at another insurance defense firm in Jacksonville. He is a current member of the Jacksonville Bar Association and American Bar Association.

William earned an undergraduate degree from Auburn University, majoring in Sociology and minoring in Anthropology. He then returned to Jacksonville to attend Florida Coastal School of Law, graduating with a Juris Doctor with honors.

Practice Areas:  

Admitted to Practice:

  • Florida, 2015 


  • Florida Coastal School of Law, Juris Doctorate, cum laude, 2015 
    • Book Awards: Constitutional Law II & Supreme Court Litigation
    • Moot Court Honor Board, Vice President
    • Honor Court Chief Judge
  • Auburn University, Bachelor of Arts, 2012

Professional Affiliations:

  • Jacksonville Bar Association
  • American Bar Association