Patient Reviews

Reviews reflect patients' level of satisfaction with the care they received from this provider. Dr. Thomas Diaz xhas an overall rating of 4.1.


Dr. Thomas Diaz, MD is a Doctor primarily located in Katy, TX, with other offices in Irving, TX and Irving, TX. He has 26 years of experience. His specialties include Family Medicine. Dr. Diaz is affiliated with Las Colinas Medical Center, Baylor Medical Center At Irving and Baylor Regional Medical Center At Grapevine. He speaks English.


Find out the languages this doctor/ or staff may speak.


Learn where this doctor attended medical school.

Specialties & Expertise

Dr. Thomas Diaz has the following 1 specialty and 1 board certification.

Family Medicine

A family practitioner is a doctor who specializes in caring for people of all ages, at all stages of life. Rather than focusing on the treatment of one disease or patient population, family practitioners are often the doctors that people see for their everyday ailments, like cold and flu or respiratory infections, and health screenings. When necessary, family practitioners will provide referrals for conditions that require the expertise of another specialist.
The doctors may also provide physicals, inoculations, prenatal care, treat chronic diseases, like diabetes and asthma, and provide advice on disease prevention.

Board Certification

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.

Locations & Directions

1331 W Grand Pkwy N
Katy, TX 77493

4625 Redwood Ct
Irving, TX 75038

3501 N MacArthur Blvd
Irving, TX 75062

Nearby Doctors

Dr. Thomas Diaz, MD is similar to these 3 Doctors near Katy, TX.