She is a co-founder of the Center for Clinical and Cognitive Neuropharmacology and the Pharmacometrics Division of the Center for Forecasting Drug Response. Her expertise and research interests focus on the clinical pharmacokinetics of antiepileptic drugs in special populations. She has been working in the pharmacokinetic analyses and modeling field for 16 years. Birnbaum is/has been principal investigator on grants funded by the National Institutes of Health investigating the effect of pharmacokinetics of antiepileptic drugs and outcome measures in elderly nursing home patients.