![Dr. Tonia Guida smiling while wearing a suit coat.](/sites/default/files/styles/utexas_image_style_500w_500h/public/2023-08/guida_tonia_2023-07_pharmacy_headshot_cr1_3623_500px_square.jpg?itok=cAmqJw8L)
Tonia Guida, Ph.D.
Assistant Professor of Instruction
![Dr. John Richburg](/sites/default/files/styles/utexas_image_style_500w_500h/public/2022-07/Richburg_John_2022-07_Pharmacy_Faculty_Headshots_CCR_0049_500px_Square.jpg?itok=YEGF5B8N)
John H. Richburg, Ph.D.
Associate Dean for Research and Graduate Studies
Professor of Pharmacology & Toxicology
Gustavus & Louise Pfeiffer Professor in Toxicology
![Dr. Justin Samuel](/sites/default/files/styles/utexas_image_style_500w_500h/public/2022-07/Samuel_Justin_2022-07_Pharmacy_Faculty_Headshots_CCR_0315_500px_Square.jpg?itok=ZnY-VuQ7)
Justin Samuel, Ph.D.
Assistant Dean for Student Affairs
Assistant Professor of Practice