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UTMB Provider
William Mize, MD
UTMB Health Provider
Languages: English
Accepting new patients.
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Dr. Mize specializes in child development and behavior in the Division of Adolescent and Behavioral Health. A native Texan, Dr. Mize earned his medical degree at Baylor College of Medicine, where he also completed his pediatric residency and a one-year fellowship in developmental pediatrics.

Dr. Mize also completed an additional three years of fellowship training in behavioral and developmental pediatrics at Case Western Reserve University. He is certified in the subspecialty of developmental and behavioral pediatrics.

Prior to joining UTMB, Dr. Mize was in clinical practice at the University of Illinois College of Medicine in Peoria, caring for children with developmental delay, ADHD with co-morbidities, autism spectrum disorders, behavior problems and psychosomatic problems.

Dr. Mize is interested in complementary medicine, nutrition and neuro-feedback as adjuncts to traditional care. His research interests include nutrition and essential fatty acids in brain development, brain biofeedback treatments for children with ADHD, and screening for learning disabilities.

He is a Fellow of the American Academy of Pediatrics and a member of a number of professional organizations, including the Society for Developmental and Behavioral Pediatrics and the Interdisciplinary Council on Developmental and Learning Disorders.

LGBTQIA+ preferred provider. Click to for LGBTQIA+ resources. Provider is LGBTQIA+ Responsive

Medical/Professional School:

Baylor College of Medicine - Houston, TX, MD, 1976


Pediatrics, Baylor College of Medicine - Houston, TX, 1978


Developmental and Behavioral Pediatrics, Baylor College of Medicine - Houston, TX, 1979

Developmental and Behavioral Pediatrics, Case Western Reserve University School of Medicine - Cleveland, OH, 1997


American Board of Pediatrics, Pediatrics

American Board of Pediatrics, Developmental Behavioral Pediatrics

2785 Gulf Freeway South Suite 2.200
League City, TX 77573
Fax: (409) 772-3680
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*Dr. Mize is excellent when it comes to medications. However, he doesn't seem to take a whole-person approach (looking at social, family, emotional age, socioeconomic concerns, progress made, alternative therapies or ideas). We find this one dimensional approach frustrating.Jul 09,2019
We changed doctors because a lack of communication from *Dr. Mize, he never spoke to...Oct 28,2014