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About me

John Mastriani of the Mastriani Law Firm, PC has more than 20 years of litigation experience. John received his juris doctorate in 1987 from the Cumberland School of Law at Samford University before attending the New York University School of Law where he received a Letters of Law Master in Securities and Corporation Law. Mr. Mastriani's parents taught him the value of hard work, integrity and helping others. He understands the virtues of responsibility and the commitment to work long hours to zealously advocate his client's position. He believes the boldest accomplishments occur when one has the diligence to persevere. He takes the time to learn his client's objectives and applies the law to them. He believes that things are not to be done right once in a while, rather, they should be done right all the time. Mr. Mastriani ensures that his firm will deliver its legal services at the highest level and most cost effective manner with respect to each client's particular situation.


Languages spoken: English, Spanish, Vietnamese

Photos and videos

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Practice areas


  1. Bankruptcy & Debt: 32%
    12 years, 3.11 thousand cases
  2. Litigation: 32%
    27 years, 3.86 thousand cases
  3. Debt Settlement: 32%
    12 years, 2.31 thousand cases
  4. Personal Injury: 1%
    27 years, 500 cases
  5. Other: 3%
  6. More 



Contingent (25-45%), Retainer (always), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

13 total 

Are you an attorney? Endorse this lawyer

  • Christian K. Lassen II

    Top-notch attorney. Highly respected in the legal community.


    Christian Lassen Personal Injury Attorney
    Relationship: Fellow lawyer in community

  • Robert Chamless Lane

    I highly endorse John. He's a tough litigator and can really help people that are in a bind with creditors.


    Robert Lane Insurance Attorney
    Relationship: Worked together on matter

Contact info

The Mastriani Law Firm

5959 West Loop South
Suite 420
Houston, TX, 77401-2403

The Mastriani Law Firm

103 E 6th Street
Suite 812
Austin, TX, 78701

The Mastriani Law Firm

104 Idle Creek Lane
Dallas, TX, 77515



TXEligible To Practice In Texas 198710/19/2015

Professional misconduct

This lawyer was disciplined by a state licensing authority.

  1. Public Reprimand
    issued in TX, 2004


    Public reprimand means an attorney did something wrong but may still practice law. The State gives the lawyer a public reprimand in hopes that he or she will not repeat the behavior. Details of the infraction are made part of the public record.

Avvo contributions
Legal answers
Award nameGrantorDate granted
Law ReviewCumberland School of Law1985
Work experience
TitleCompany nameDuration
PrincipalMastriani Law firm1990 - Present
AttorneyDiedrich, Hoelke and Rubin1988 - 1990
Association namePosition nameDuration
Who's WhoWho's Who Honors Edition2014 - Present
Houston Bar AssociationMember2014 - Present
Houston Bar Association, Litigation SectionMember2014 - Present
Houston Bar Association, Commercial and Consumer Law SectionMember2014 - Present
Texas Trial Lawyers AssociationMember2014 - Present
National Association of Consumer AdvocatesMember2008 - Present
Legal cases
Case nameOutcome
2007-CV-02382: Sam Gachiengu v. Fia Card Services, In the Southern District of TexasLandmark decision for Consumer against Banks
14-04-01131-CV Kelly K. Hay v. Citibank (South Dakota) N.A., In the 14th Court of Appeals TexasLarge Interest Rate Judgment Eradicated
NO. 09-06-283 CV: Bruce Clifton v. American Express, In the 9th Court of Appeals TexasOverturned a Large Judgment on Appeal and Won at Trial
See all legal cases 
Publication nameTitleDate
Cumberland Law ReviewResearch Board1987
School nameMajorDegreeGraduated
New York University School of LawCorporation and Securities LawLL.M - Master of Laws1988
Samford University, Cumberland School of LawLawJD - Juris Doctor1987
Samford University, Cumberland School of LawLawProctor of Admiralty1987
University of Houston, main campusFinanceBBA1983
Speaking engagements
Conference nameTitleDate
Webinar for Mobile WebsitesWebinar on Mobile Websites2013
Fox News Morning ExtraAvoid Holiday Credit Tricks2013
Fox Morning News1099C Debt Forgiveness2013
Fox Morning NewsDebt Reduction Strategy2012
Fox Morning NewsImproving Your Credit2012
Fox Morning NewsYour Money Questions2012
Fox Morning NewsHow to Avoid Retailers Tricks2012
Fox Morning NewsAvoiding Holiday Debt2012
Fox Morning NewsCredit Card Default2012
Fox Morning NewsCredit Card Company Tricks2012
Fox Morning NewsAnatomy of Credit Card Lawsuit Revisited2012
Fox Morning NewsWhat type of calls creditors can make2012
Fox Morning NewsTips to get a Favorable Debt Settlement2012
Fox Morning NewsHow to Avoid Credit Card Debt2012
Fox Morning NewsHow to Defend a Collection Matter2012
Fox Morning EditionWhat to Say to a Debt Collector2012
Fox Morning NewsFreedom from Debt2011
Fox Morning NewsHow to be Debt Free2011
Fox Morning NewsHow to Settle Debt2011
Fox Morning NewsHelpful Tips to reduce Credit Card and Bank Debt2011
Fox Morning NewsDealing with Debt2011
Fox Morning NewsHow to reduce Interest and eliminate principal2011
Fox Morning NewsAnatomy of a Credit Card Lawsuit2010
Fox Morning NewsHow to Deal with Overwhelming Debt2010