About William Mathew
William Mathew Concidine is a licensed attorney admitted to practice law in the State of California. He was admitted to the California State Bar on December 1, 2006, and holds bar number 246734. His license is currently in active status. Mr. Concidine is the principal attorney at the Law Office of William M. Concidine, a law firm located in San Diego, California. He has been practicing law for over nineteen years, serving clients throughout San Diego County and the surrounding areas.
Mr. Concidine earned his Juris Doctor degree from California Western School of Law in San Diego, California, graduating in 2006. Prior to law school, he completed his undergraduate education at California Polytechnic State University, San Luis Obispo, where he received a Bachelor of Arts degree in Political Science. During his time at California Western, he gained practical experience by interning at the Public Defender's Office and the Alternate Public Defender's Office in San Diego, handling a range of criminal cases.
Mr. Concidine concentrates his practice in the areas of criminal defense, with a particular focus on DUI/DWI cases, speeding and traffic tickets, and other criminal offenses. He represents individuals accused of various crimes, including drug offenses, theft, and violent crimes. His practice encompasses all stages of litigation, including initial case evaluation, discovery, pre-trial motions, settlement negotiations, and trial proceedings in both state and federal courts.
Throughout his career, Mr. Concidine has handled cases in the Superior Court of California for the County of San Diego, the United States District Court for the Southern District of California, and the United States Court of Appeals for the Ninth Circuit. He has also appeared before the California Court of Appeal on multiple occasions. Prior to founding his own firm, he worked as an associate attorney under a prominent criminal defense attorney in San Diego, gaining extensive experience in handling complex criminal cases.
Mr. Concidine is an active member of the California State Bar Association and the San Diego County Bar Association. He is also a member of the San Diego Criminal Defense Bar Association, the California DUI Lawyers Association, and the National Association of Criminal Defense Lawyers. He is fluent in English and Spanish, allowing him to serve the diverse communities of San Diego County effectively.
