Attorney Profiles

Mark Diaz – Experienced and Aggressive Texas Criminal Defense Attorney

As a criminal defense Attorney in Galveston, Mark Diaz has been aggressively defending the rights of Texans for over eighteen years. A 1998 graduate of Thurgood Marshall School of Law who obtained his undergraduate degree from the University of Houston, Mark concentrates his practice solely in the area of criminal defense. He is admitted to practice law in all Texas state courts as well as federal court in the United States District Court for the Southern District of Texas. Mark is a seasoned litigator who has tried every kind of criminal defense case.

Mark understands that being charged with a crime is an emotional and personal challenge. He considers criminal defense his life’s work, and he is committed to providing each client with personalized attention, affordable representation, and the best defense available anywhere. Mark prides himself on his ability to quickly respond to the needs and concerns of his clients. In the realm of criminal defense, questions and concerns can’t always wait until morning. Mark’s clients receive his cell phone number, so they can connect any time they need help. From arrest through trial, Mark works hard to get the best possible results in and out of court. To speak to Mark about your case and find out how he can help you defend your rights, call him at (409) 515-6170. He offers free consultations and easy, complimentary parking at his Galveston, Texas office. Se Habla Español.

Contact Me At: mark@texascriminaljustice.com


Gregory J. Guarino, Jr

Gregory J. Guarino, Jr
Attorney Gregory J. Guarino, Jr. is a fourth generation Houstonian. After graduating Stratford High School, he attended the University of Texas at Austin. While at Texas, Greg studied abroad in Barcelona, Spain where he learned Spanish. After college, Greg lived in Arequipa, Peru for a month where he volunteered at an orphanage. Greg went on to obtain his law degree at South Texas College of Law. After law school, Greg worked as an assistant District Attorney at the Galveston County District Attorney’s Office. Greg handled misdemeanor cases as an ADA trying cases to jury verdict.

Greg then became a Staff Attorney at Catholic Charities of the Archdiocese of Galveston-Houston where he practiced immigration law focusing on immigration relief for unaccompanied minors. Greg specialized in handling Special Immigrant Juvenile and Asylum cases, and has been able to obtain green cards for numerous low-income youth from Guatemala, El Salvador, Honduras, Nicaragua, and Mexico.

Greg was then promoted to Supervising Attorney at Catholic Charities where he leads a team of six lawyers and six caseworkers. Greg has presented at many Continuing Legal Education sessions to pro bono attorneys on the topic of Special Immigrant Juvenile Status. He is committed to serving those seeking immigration relief, and is passionate about assisting his clients in achieving the American dream.

Dedicated to helping children and families in need, Greg serves on the Young Professionals Board of both Avenue 360 Health and Wellness and Camp for All. Greg provides immigration services in English and Spanish.