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William Mathew Concidine

About Me

Hello, thank you for taking the time to learn a little more about me. My name is William Concidine and I am a criminal defense lawyer practicing in Southern California with an office centrally located in downtown San Diego. This area is commonly referred to as the Gaslamp Quarter. Prior to opening my own office, I spent several years as an associate attorney under one of the city's best criminal defense attorneys.


Prior to that experience, I learned the day to day procedures of the misdemeanor courts while interning at the Public Defender of San Diego. This experience lead to a positive and solid working relationship with City Attorneys and District Attorneys throughout San Diego County. 


In addition to my time at the Public Defender, I spent several years interning at the Alternate Public Defender where I worked on serious felony offenses.


As for my education, I received my Juris Doctor degree from California Western School of Law in San Diego, California. While there, I fell in love with San Diego and decided it was where I wanted to spend my career. Prior to California Western, I received my Bachelor of Arts degree from California Poyltechnic University, San Luis Obispo in San Luis Obispo, California. I love to return there to visit with old friends from my fraternity, Sigma Nu, and grab a bite to eat at Firestone's Grill in downtown.


Thank you again for taking the time to learn about me. If you have any questions or want to talk, please give me a call.



Photos and Videos

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Practice Areas


  1. Speeding & Traffic Ticket: 100%
    8 years, 1.5 thousand cases



Retainer (Always), Free Consultation (30 minutes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

54 total 

  • Hector Jesus Tamayo

    Tenacious and aggressive in the advocacy of his clients William is truly a cut above. He is knowledgeable and skilled in his approach to his practice and is always willing to go the extra round for his clients. I have personally witnessed William at work and can say that he is an excellent attorney. I strongly endorse William Concidine.


    Hector Tamayo Criminal Defense Attorney
    Relationship: Fellow lawyer in community

  • Chananel H Nakasaka

    William is amazing! I had a matter in San Diego. He had my client's case dismissed! I had a challenging situation in San Diego Central. I sent an appearance attorney who didn't care about my client. William was detailed about explaining the local rules of San Diego Central. I'm so grateful for William.


    Chananel Nakasaka Criminal Defense Attorney
    Relationship: Worked together on matter

Contact Info

William M. Concidine at My Traffic Guys

1205 J Street
Suite G
San Diego, CA, 92101



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Client's ChoiceAVVO2014
Top ContributorAVVO2014
Top Young AttorneysSan Diego Daily Transcript2013
Top Young AttorneyThe Daily Transcript2011
Top Young AttorneysSan Diego Daily Transcript2010
Work Experience
TitleCompany NameDuration
AttorneyMy Traffic Guys2012 - Present
AttorneyLaw Office of William M. Concidine2009 - 2012
Associate AttorneyLaw Office of Brian J. White2007 - 2009
Association NamePosition NameDuration
California DUI Lawyers AssociationMember2009 - Present
San DIego Criminal Defense Bar AssociationMember2009 - Present
California Attorneys for Criminal JusticeMember2008 - Present
Irish American Bar Association of San DiegoMember2008 - Present
National Association of Criminal Defense AttorneysMember2007 - Present
San Diego County Bar AssociationMember2006 - Present
Legal Cases
Case NameOutcome
People v. LopezNot guilty on both counts of DUI
People v AbadieCharges Dismissed after trial
See all Legal Cases 
Publication NameTitleDate
ABA JournalThe Docket: The Eyes Have It2014
ABC NewsGoogle Glass Ticket Dismissed2014
CNNGoogle Glass Ticket Dismissed2014
San Diego Union TribuneGoogle Glass Driving Ticket Dismissed2014
School NameMajorDegreeGraduated
California Western School of LawLawJD - Juris DoctorN/A
California Polytechnic State University, San Luis ObispoPolitical ScienceBA - Bachelor of ArtsN/A
Speaking Engagements
Conference NameTitleDate
Continuing Legal EducationDMV and Traffic Court2014