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William P. Devereaux is a Principal with Pannone Lopes Devereaux & O’Gara LLC and leads the firm’s Criminal Defense Team. Attorney Devereaux is a prominent and highly respected criminal and civil litigator, who also has contributed considerable time and effort throughout his thirty five years of practice to provide pro bono legal representation to nonprofit organizations, and has served on several charitable boards. Mr. Devereaux’s practice has included the representation of high-profile clients, including CEOs, doctors, lawyers, and leading political figures in state and federal court. He was the first attorney in the United States to successfully negotiate a “Deferred Prosecution Agreement” for a hospital and he is the original author of “Rhode Island’s Guide to Grand Jury Service.”

Attorney Devereaux routinely appears before the Rhode Island Supreme Court and the First Circuit Court of Appeals. In addition to representing individuals in criminal defense matters, Mr. Devereaux represents for profit and non-profit organizations with respect to health care fraud, money laundering, securities disputes and product liability issues. He represents clients before the Department of Justice, the HHS Office of Inspector General and Office of Civil Rights and defends individuals and agencies with respect to Medicaid and Medicaid fraud, enforcement actions and agency audits. He has also represented casino developers, municipalities and Native American Tribes with respect to gaming, licensing, permitting and contracting issues involving the Indian Gaming Regulatory Act.

Attorney Devereaux is highly regarded for his ability to manage grand jury and other governmental investigations to avoid indictments or actions by regulators. After graduating from Suffolk University Law School, Attorney Devereaux served in the U.S. Navy Judge Advocate General’s Corps during which time he acted as Senior Defense Counsel for the Naval Base at Pearl Harbor and as a Special Assistant U.S. Attorney for the District of Hawaii. He later served as an Assistant Attorney General for the State of Rhode Island and prosecuted organized crime and major felony cases, as well as environmental criminal offenses. As an Assistant Attorney General, Mr. Devereaux also served as supervising attorney for statewide Grand Jury matters.

Attorney Devereaux is a prominent member of the Rhode Island and Massachusetts legal communities and has been honored by his peers and judges with the AV Preeminent rating from Martindale Hubbell, which is the highest rating based on both legal ability and ethics. He has also been selected annually by his peers for inclusion in The Best Lawyers in America®, received the peer-evaluated Professional Excellence in Law Award in 2021 and 2022 from Rhode Island Monthly, a distinction recognizing only 5% of attorneys in the area, and is recognized as a Civil Litigation and Criminal Defense Super Lawyer.

Attorney Devereaux is one of the co-founders at Pannone Lopes Devereaux & O’Gara LLC. He earned his Juris Doctorate from Suffolk University School of Law and his undergraduate degree from Wesleyan University. He is admitted to practice law in Rhode Island, Massachusetts, the U.S. District Courts for the Districts of Rhode Island and Massachusetts, the First Circuit Court of Appeals and the U.S. Court of Military Appeals for the Armed Forces. Attorney Devereaux is a retired Captain in the United States Naval Reserve.


  • Northwoods Office Park, Suite 215-N
    1301 Atwood Avenue
    Johnston, RI 02919

Bar Admissions

  • Massachusetts, Massachusetts Bar Association
  • Rhode Island, Rhode Island Bar Association

Lawyer of the Year Badge - 2019 - Criminal Defense: General Practice Lawyer of the Year Badge - 2018 - Criminal Defense: White-Collar

Named "Lawyer of the Year" by Best Lawyers® for:

  • Criminal Defense: General Practice, Providence (2019)
  • Criminal Defense: White-Collar, Providence (2018)

Recognized in The Best Lawyers® in America 2023 for work in:

  • Criminal Defense: General Practice
  • Criminal Defense: White-Collar

Special Focus

  • Cyber Law
  • White-Collar Criminal Defense


  • Professional Excellence in Law Award, Rhode Island Monthly
  • Best Lawyers in America
  • New England Super Lawyers, Civil Litigation Defense
  • Pro Bono Publico Recipient, RI Bar Association

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