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About Me

Our firm, Mastro Barnes and Stazzone, P.C. represents people accused of crimes. As a criminal lawyer, I get to go to court nearly every day and help people whose lives are sometimes in turmoil. The people we represent do not need a lecture from their attorney but sound and caring advice. We offer a helping hand.


Languages Spoken: Spanish

Practice Areas


  1. Criminal Defense: 65%
    27 years, 2 thousand cases
  2. DUI & DWI: 20%
    27 years, 500 cases
  3. Violent Crime: 10%
    27 years, 100 cases
  4. Speeding & Traffic Ticket: 5%
    27 years, 500 cases



Fixed (Sometimes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

20 total 

  • Gregory D Robinson

    Steve is a very experienced former prosecutor that knows how to work with people and also go to trial on the cases that need it. He is an honest, hard working, smart lawyer. If you hire him, you're in good hands.


    Gregory Robinson Criminal Defense Attorney
    Relationship: Fellow lawyer in community

  • Craig Noel Mastro

    Mr. Barnes and I have been law partners for over 20 years. Steve is one of the very best trial attorneys in Colorado in my opinion. He is well respected in the legal community and I am proud to have been associated with him over all these years. He will tell you what he believes the outcome of your case will be and give you a fair analysis of all your options in your case. He will not only be thorough with you in his analysis of your case but also give you the respect you deserve while handling your case.


    Craig Mastro Criminal Defense Attorney
    Relationship: Co-worker

Contact Info

1720 S. Bellaire Street Suite 807
Denver, CO, 80222



Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Client ReviewAmerican Institute of DUI/DWI Attorneys2015
Colorado Scholars Scholarship RecipientColorado Scholars Award1983
Work Experience
TitleCompany NameDuration
PartnerFossum Mastro Barnes and Stazzone, PC1994 - Present
Deputy District Attorney17th Judicial Adams District Attorney's Office1992 - 1994
Deputy District Attorney16th Judicial District - District Attorney's Office1990 - 1992
Association NamePosition NameDuration
Colorado Criminal Defense Bar AssociationMember2005 - Present
Colorado Bar Association - 16th Judicial DistrictVice President1991 - 1992
Adams/Broomfield Bar AssociationN/AN/A
Legal Cases
Case NameOutcome
People v. BNot guilty all charges.
See all Legal Cases 
School NameMajorDegreeGraduated
University of Missouri - Kansas City School of LawLawJuris Doctor1988
University of Colorado - DenverPolitical ScienceBA - Bachelor of Arts1984
Speaking Engagements
Conference NameTitleDate
DCSO TrainingCross examination - Police witnesses2015