About Mark Philip

Mark Philip Haby is a seasoned criminal defense attorney based in San Antonio, Texas — Licensed to practice law in Texas since 1995, he holds Bar Card Number 00792944. His primary areas of expertise include criminal law, DUI & DWI, and family law. Haby is an active member of several professional organizations, including the State Bar of Texas, the San Antonio Criminal Defense Lawyers Association, and the Medina County Bar Association. These affiliations reflect his commitment to staying informed about legal developments and advocating for justice in his community. In 2019, Governor Greg Abbott appointed Haby as the District Attorney for the 38th Judicial District, which encompasses Medina, Uvalde, and Real counties. His term as District Attorney is set to expire on December 31, 2028, marking a significant milestone in his career. This role allows him to apply his extensive legal knowledge while serving the public interest.

Prior to this appointment, Haby served as a Justice of the Peace from 2003 to 2019, where he gained inexperience in the judicial system. His legal journey began with a Juris Doctor degree from St. Mary's University School of Law, which he earned in 1995, following a Bachelor of Arts in Public Justice from the same institution in 1992. Haby's legal career includes positions as an associate at the Law Office of Rudy T. Monsalvo and the Law Office of William T. Reece. These roles provided him with a solid foundation in criminal defense and litigation.

During his time in law school, he interned at the Bexar County Criminal District Attorney's Office, where he worked that would later inform his approach to criminal defense. This blend of education and hands-on experience has equipped him to handle complex legal issues effectively. Beyond his legal practice, Haby is deeply committed to community involvement. He is a member of the St. Louis Catholic Church ACTS Community Core Team and actively participates in the Alsatian Festival of Texas Planning Committee. His volunteer work extends to the Annual St. Louis Day Church Picnic, where he dedicates time to support local traditions.

Additionally, Haby has served as an assistant coach for the Medina Youth Football Association, contributing to youth development in the area. His involvement with the St. Louis Catholic School Council and the St. Vincent de Paul Society further shows his dedication to community service. Haby's office is conveniently located at 1403 Avenue N, Hondo, Texas 78861, where he continues to serve clients with diligence and integrity. He can be reached by phone at (830) 741-6187 for consultations. With a career spanning over two decades, Haby remains a prominent figure in the legal field of South Texas, dedicated to upholding justice and supporting his community.

Education

St. Mary s University

Doctor of Jurisprudence/Juris Doctor (J.D.)

1995

Languages

English (Spoken, Written) Spanish (Spoken, Written)

Accepted Jurisdictions

Texas

Court Admissions

U.S. District Court for the Western District of Texas U.S. District Court

Types of Cases Handled

Criminal DUI & DWI Family Law

Legal Services Scope

Trial Appellate

Professional Associations

The College of the State Bar of Texas

has membership 2015 - Current

San Antonio Criminal Defense Lawyers Association

has membership 2000 - Current

Medina County Bar Association

has membership 1995 - Current

Office Locations

Main Office

 6243 IH-10 West, Suite 840 San Antonio TX 78201

Sources

Information is current as of February 18, 2026. For the most up-to-date information, please refer to the provided sources.