Mary Ensom (formerly Chandler) is a leading authority on clinical pharmacokinetics and pharmacodynamics. Her sustained research program and prolific high-quality publications have greatly enhanced our knowledge of the impact of disease, age, hormonal influences, genetics, and other factors on drug action and disposition. As an integrator who bridges the gap between the basic and clinical sciences, she learns about patient problems as a clinician, researches those questions, and passes along the learning to her students. Dr. Ensom is also well recognized for her teaching and administrative abilities and as a professional role model in pharmaceutical sciences.