Siewert has spent 43 years in rural family practice and emergency room medicine as a self-employed physician. He belongs to the Texas Osteopathic Medical Association and works as an aviation medical examiner for the Federal Aviation Administration. He also serves as a medical examiner for the Federal Motor Carrier Safety Administration under the Department of Transportation.
His education started at Amarillo College, where he earned an Associate of Science in Pre-Medical. From there he went to the University of Houston for a Bachelor of Science in Biology before completing his doctorate.
The appointment puts an Amarillo doctor with decades of hands-on rural and emergency medicine experience into a role overseeing physician conduct and licensing decisions in District Three. Review committees like this one handle complaints and disciplinary matters for doctors practicing in the region. That gives Siewert a direct hand in how the state polices medical standards close to home, deciding for the next five years how his peers are held accountable.