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About me


Mitzi Mayfield has practiced Civil Trial Law for 22 years.  She regularly represents clients in general civil litigation, trucking and automobile litigation, commercial litigation, medical malpractice, premises liability and products liability litigation.  Ms. Mayfield also practices in the areas of oil and gas litigation and business litigation and has defended clients against intentional tort claims of libel and slander.  Additionally, she has handled matters involving medical committee and medical peer review committee privileges and represented pharmacists in matters pending before the Texas State Board of Pharmacy.


Mitzi was named a Texas Super Lawyer by Texas Monthly for 2009‑2013 and honored with inclusion into the Martindale Hubbell Bar Register of Preeminent Women Lawyers in 2013.  She also lectures frequently to lawyers, adjusters and risk management personnel at continuing education seminars and has served as a chairman for continuing education seminars for both the State Bar and Texas Association of Defense Counsel.  Ms. Mayfield is currently on the Board of the Texas Association of Defense Counsel.  She also serves as President for the Amarillo Area Bar Foundation 2013-2014 and served as a Director 2011-2013.  Ms. Mayfield served as a Director for Amarillo Area Bar Association.  She is very active in local and state bar activities and is an active member of American Board of Trial Advocates, Texas Association of Defense Counsel, and Defense Research Institute.


Ms. Mayfield practiced 13 years in Dallas before moving to Amarillo in 2004.  Mitzi and her husband Todd have three children, Claudia, Ellen and Rollins.  Her hobbies include traveling, tennis and cooking.



Photos and videos

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Practice areas


  1. Litigation: 40%
  2. Health Care: 20%
  3. Transportation: 20%
  4. Defective Products: 10%
  5. Oil & Gas: 10%

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Contact info

Riney & Mayfield LLP

320 South Polk Street
Suite 600
Amarillo, TX, 79101


TXEligible To Practice In Texas 199107/16/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Texas Super LawyerTexas Monthly Magazine2015
Texas Super LawyerTexas Monthly Magazine2014
Texas Super LawyerTexas Monthly Magazine2013
Inclusion into Preeminent Women LawyersMartindale-Hubbell2013
Texas Super LawyerTexas Monthly Magazine2012
Texas Super LawyerTexas Monthly Magazine2011
Texas Super LawyerTexas Monthly Magazine2010
Texas Super LawyerTexas Monthly Magazine2009
Work experience
TitleCompany nameDuration
PartnerGwinn & Roby L.L.P.1991 - 2004
Association namePosition nameDuration
Texas Association of Defense CounselMemberN/A
Amarillo Bar AssociationMemberN/A
Texas Bar FoundationN/AN/A
State Bar of TexasN/AN/A
Amarillo Area Women's Bar AssociationN/AN/A
American Board of Trial AdvocatesN/AN/A
Defense Research InstituteN/AN/A
Publication nameTitleDate
Defending Auto Collision Cases 2014Injuries and Damages-Defense Perspective2014
University of Texas School of Law Car Crash SeminarMaximizing and Minimizing Damages: The Defense Perspective (Paid vs. Incurred)2013
TADC Summer SeminarSellers Get a Free Ride: Statutory Indemnity for Products Liability in Texas2008
In-Service Publication/Presentation Northwest Texas Healthcare SystemPreventing Law Suits Through Effective Communication2006
School nameMajorDegreeGraduated
Texas Tech University School of LawLawJD - Juris Doctor1991
Texas Tech University School of LawN/ABA - Bachelor of Arts1987
Speaking engagements
Conference nameTitleDate
2015 Advanced Medical TortsCourse Director2015
Defending Truck/Auto Collision CasesInjuries and Damages-Defense Perspective2014
Advance Medical Torts Seminar"Damages Overview - Maximizing and Minimizing Damages"2014
Defending Trucking/Auto AccidentsDamages: The Defense Perspective2012
TADC SeminarThe Law of Voir Dire - Making or Breaking Your Case2011
TADC Annual MeetingContinuing Developments of Voir Dire2011
Advanced Medical Malpractice CourseThe Selection, Care and Feeding of Expert Witnesses2011
Advanced Evidence and Discovery CourseMedical Malpractice Evidence and Discovery Issues2010
TADC SeminarStatutory Indemnity for Products Lirability in Texas2008
In-Servie Presentation to Healthcare ProvidersPreventing Lawsuits Through Effective Communication2006
TADC SeminarThe Current State of Medical Liens in Texas2005