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Mark L. Deniz Esq.



Mark L. Deniz Esq.

  • Founder & Owner

San Diego DUI & Criminal Defense Attorney Mark Deniz has dedicated his firm to helping people who find themselves facing tough times. His proactive, solution-finding approach has resulted in years of proven success. When someone is facing criminal charges, you want an attorney with the training and experience that Mark Deniz brings.

San Diego DUI & Criminal Defense Attorney Mark Deniz has won numerous awards during his 17 years as an attorney.  This includes:

• Top Criminal Defense Lawyer
• Perfect Rating by Avvo
• Clients Choice award for six years straight.
• Spotlight on Attorney Journal Magazine
• and many more

Before moving to the defense side of the bar, Mark Deniz was an award-winning prosecutor for almost 10 years.  He has spent years as both a Deputy District Attorney and a San Diego Deputy City Attorney.  He was trained on the handling of DUI & Criminal cases. He was trained at the Department of Justice National Advocacy Center in Columbia, South Carolina. His time as a San Diego Prosecutor helped establish him with prosecutors and Judges, who he now works with on behalf of his clients. While as both a Prosecutor and Defense Attorney, Mark Deniz has handled the range of criminal defense spectrum of basic misdemeanors to the most serious felony cases. You want a former San Diego DUI & Criminal Defense Attorney Prosecutor on your side.

San Diego DUI & Criminal Defense Attorney Mark Deniz as specialized his practice in Criminal Law, since he became an attorney in 2003.  Before becoming an attorney, he has worked in the Sheriff’s Department, County Counsel’s Office, and worked with senior citizens.

Attorney Mark Deniz is a native of Southern California. He earned a scholarship playing college football and was awarded the honor of Academic All-American. After college, he spent a few years as a high school educator and a varsity football coach. He then followed his dreams and attended law school.

Mr. Deniz learned the prosecutor's side of the law while working for the DA's office. He knows where the law stands on criminal issues. He also understands where the law is weak, where evidence can be deemed inadmissable and when cases have a good chance of being thrown out or dismissed.

Mr. Deniz opened his own practice to focus on criminal cases. He brings his vast knowlege and first-hand experience to bear on every case he takes in his private practice. With his depth of experience, he knows how to get favorable results.  He knows there is a way to work with clients with compassion, instead of the impersonal approach found in many law firms, and those without the knowledge of the inner workings of the prosecution. “Solutions” is the motto and goal of the firm, helping people get through a tough times. 


Practice Areas

  • Criminal Defense


  • John F. Kennedy University School of Law, Pleasant Hill, California
    • J.D. - 06/2002
  • Northern Arizona University, Flagstaff, Arizona
    • B.S. - 12/1995

Bar Admissions

  • California, 2003

Past Positions

  • San Diego City Attorney's Office, Deputy City Attorney, 03/2009 to 04/2013
  • Tulare County District Attorney's Office, Deputy District Attorney, 01/2004 to 03/2009


Classes & Seminars

Pro-Bono Activities

Published Works

Fraternities or Sororities

  • Phi Sigma Alpha

Representative Clients

Representative Cases

Certified Legal Specialties

Professional Associations

  • Attended the Prestigious National Advocacy Center in Columbia, South Carolina
  • National College of Dui Defenses, Member
  • California Dui Lawyers Association, Member
  • San Diego Criminal Defense Bar, Member
  • San Diego County Bar Association, Member
  • The California District Attorney's Association, Former Member

Ancillary Businesses