Attorney Profile

Deborah Mackoy

Mackoy, Hernandez, Qualls, Brown & Zahn, LLP
6017 W Main St, 2nd Floor
Frisco, TX 75034
Mackoy, Hernandez, Qualls, Brown & Zahn, LLP
Phone 214-387-9056
Fax 214-387-4910


Selected To Super Lawyers: 2013 - 2014

Selected to Super Lawyers for 2 years bottom-image

Practice Areas

Family Law

Estate & Trust Litigation

Lawyer Practice Area Pie Chart


Deborah Mackoy, a partner at the law firm of Mackoy, Hernandez, Qualls, and Brown in Frisco, Texas, has dedicated her career to all aspects of family law and prides herself on serving the citizens of the Dallas area. Following her undergraduate studies at the University of Texas at Dallas, from where she graduated Summa Cum Laude in 1993, Ms. Mackoy went on to attend Southern Methodist University School of Law and graduated with a juris doctorate degree in 1996. That same year, she was admitted to the State Bar of Texas. In 1997, she was admitted to The Missouri Bar and approved to practice in the U.S. District Court Northern District of Texas.

Deborah Mackoy's dedication and experience have not gone unnoticed by either the legal community or her many satisfied clients. She holds a Martindale-Hubbell BV Distinguished* rating, has a "Superb" Avvo rating and is a lifetime fellow of the Collin County Bench Bar, a Fellow of the State Bar College and a Life Fellow of the Texas Bar Foundation. Ms. Mackoy has also trained in mediation and collaborative law and is currently available to serve as a mediator in the Texas counties of Dallas, Denton and Collin.

Ms. Mackoy, in addition to being a member of the State Bar of Texas and The Missouri Bar, is a member of the Frisco Bar Association, and the Denton County Bar Association. In the Denton County bar associations, she is a member of the family law sections. In addition, she is a fellow and long standing member of The College of the State Bar of Texas a Life Fellow of the Texas Bar Foundation and has been admitted to practice before the United States Supreme Court.

*AV Preeminent and BV Distinguished are certification marks of Reed Elsevier Properties Inc., used in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell is the facilitator of a peer review rating process. Ratings reflect the confidential opinions of members of the Bar and the judiciary. Martindale-Hubbell ratings fall into two categories – legal ability and general ethical standards.

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About Deborah Mackoy

Law School: Southern Methodist University Dedman School of Law

Admitted: 1996, Texas

Professional Webpage:

Honors and Awards:

  • "Superb" Avvo rating
  • Martindale-Hubbell BV Distinguished* rating
  • Lifetime Fellow, Collin County Bench Bar Foundation

Bar/Professional Activity:

  • Life Fellow of the Texas Bar Foundation
  • Member and Fellow, The College of the State Bar of Texas
  • Member, The Missouri Bar
  • Member, State Bar of Texas
  • Member, Family Law Section, Denton County Bar Association
  • Member, Frisco Bar Association
  • U.S. District Court Northern District of Texas, 1997
  • Missouri, 1997
  • Texas, 1996

Educational Background:

  • University of Texas, Dallas, B.S., Summa Cum Laude, 1993
Call me at 214-387-9056

To: Deborah Mackoy

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