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About me

San Diego DUI defense attorney Mark R. De Yoe has won DUI trial victories and DMV hearings in seemingly impossible situations. What sets Mark apart is the care, time and personal effort he puts into each individual client's case. Mark has always cared a great deal for his clients, taken their causes to heart, and zealously defended their rights within the bounds of the law.

Mark R. De Yoe is originally from Saddle River, New Jersey. His father, Charles P. De Yoe was also an extremely experienced attorney. Mark enrolled in to the University of Northern Colorado in 1974, and obtained his B.S. in Political Science there in 1978. In college Mark was a four-year varsity member of the University of Northern Colorado ski team.

Mark enrolled at the California Western School of Law in San Diego, California, graduating in 1982 with a Juris Doctor degree. After law school Mark sat for and passed the Colorado Bar exam in 1983. After practicing for a year in Boulder, Colorado, Mark sat for and passed the California Bar exam in 1985. In 1986 Mark opened his law office in downtown San Diego. Since that time Mark's practice has been devoted to the defense of those accused of driving under the influence.  Mark's outside interests include hiking, numerous outdoor sports, astronomy and chess.

In today's world, when the police arrest and charge one with a DUI, the accused should consult with an experienced DUI lawyer immediately. The Law Office of Mark R. De Yoe, APLC, in the Wells Fargo Plaza, downtown San Diego, provides quality representation for people charged with first, second, third, fourth, felony (injury) DUI, hit and run, driving on a suspended license and boating under the influence offenses.

San Diego DUI defense lawyer Mark R. De Yoe will tenaciously advocate one's rights both in the courtroom, and before the California Department of Motor Vehicles. To learn more about protecting your criminal record and driver's license, call Mark at (619) 237-0555 to set up a valuable free initial office consultation. Integrity, honesty and hard work have been Mark R. De Yoe's core values since day one. Due to the need for fast action in San Diego DUI and DMV cases, Mark can be reached in evenings and weekends, as well as normal business hours.


Photos and videos

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Practice areas


  1. DUI & DWI: 90%
    31 years
  2. Criminal Defense: 10%
    31 years



Retainer (sometimes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

13 total 

Are you an attorney? Endorse this lawyer

  • Areeg Othman Akel

    I highly endorse this lawyer. Attorney Mark DeYoe and I have worked on legal matters together for the past 15 years. Mark is above and beyond an amazing attorney that really cares and extremely passionate about his clients. It's always a pleasure to work with Attorney Mark DeYoe on legal matters. He's truly an expert and a professional attorney.


    Areeg Akel Criminal defense Attorney
    Relationship: Worked together on matter

  • James Nelson Dicks

    This attorney works very hard for the clients and keeps up with the law by attending legal seminars to assist them in this regard. I endorse this attorney.


    James Dicks Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

Mark R. DeYoe, APLC

401 B Street
Suite 2215
San Diego, CA, 92101-4245


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
OwnerLaw Office of Mark R. De Yoe, APLC1985 - Present
Association namePosition nameDuration
DUI Defense Lawyers AssociationMember2014 - Present
California DUI Lawyers AssociationRegular Member2010 - Present
San Diego County Bar AssociationMember1986 - Present
American Bar AssociationMember1982 - Present
School nameMajorDegreeGraduated
California Western School of LawN/AJD - Juris Doctor1982
University of Northern ColoradoPolitical ScienceN/A1978