William Mulligan

Partner

Championing your rights with passion and precision.

 

William P. Mulligan is a partner at Grossman Roth Yaffa Cohen. He began working directly out of law school at a boutique defense firm, where he worked for 2 years with a focus on personal injury and insurance defense. He then worked at a national personal injury and medical malpractice defense firm for 10-11 months, where he continued to focus on personal injury and insurance defense prior to joining Grossman Roth Yaffa Cohen. William now fights for the best interests of clients who have suffered a serious injury at the hands of others.

He received a B.A. in Business Administration at the Warrington College of Business at University of Florida, with a minor in communications. William received a law degree from Boston College Law School. While at Boston College, he represented clients who could not afford legal representation at the Boston College Legal Assistance Bureau as a student practitioner pursuant to S.J.C Rule 3:03.

Selected Memberships

  • Florida Bar
  • District of Columbia Bar

 

Awards and Honors

  • The Best Lawyers in America® Medical Malpractice Law – Plaintiffs: 2025
  • The Best Lawyers in America® Ones to Watch: 2022
  • 40 under 40, Outstanding Lawyers of South Florida: 2018
  • Super Lawyers Rising Stars: 2019- 2025

Education

  • Boston College Law School, J.D.
  • University of Florida, Warrington College Of Business, B.A.

 

 

 

News & Media

March 25, 2026
Get to Know GRYC Medical Investigator: Lauren Acuña
At GRYC, our cases rely on a team of professionals who bring deep experience and investigative skill to uncove…
March 9, 2026
Get to Know GRYC Medical Investigator: Elizabeth Stockhammer
At GRYC, our cases rely on a team of professionals who bring deep experience and investigative skill to uncove…
February 24, 2026
GRYC Welcomes Three New Hires
Abigail Wettstein has joined as an Associate Trial Lawyer, Dr. Maria A. Suarez as a Medical Investigator, and …

The attorneys at GRYC fight every day to bring justice and truth back into the lives of unheard victims. We are passionate about our mission and dedicated to making our clients’ and our communities’ lives better. GRYC is a force for justice, focused on you.

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