Program Directors

Katrina Donahue, MD, MPH
Program Director 

Dr. Donahue became Program Director in 2020 after serving as Associate Program Director.  She is a Professor and Vice Chair of Research at the University of North Carolina (UNC) Department of Family Medicine. She co-directs the North Carolina Network Consortium (, a meta-network of eight practice-based research networks and four academic institutions in North Carolina.  Dr. Donahue is a graduate of the fellowship and has been involved as a faculty mentor for years.


Samantha Schilling, MD, MSHP
Program Associate Director

Dr. Schilling became Associate Program Director in 2023. She is an Associate Professor in the Division of General Pediatrics and Adolescent Medicine at UNC.  Dr Schilling’s research contributions stem from her dual roles and interests as a child abuse specialist and a primary care pediatrician. Her research program seeks to reduce child maltreatment by mitigating risk and supporting positive parenting through primary care-based interventions.


Seth Berkowitz, MD, MPH
Program Associate Director 

Dr. Berkowitz became an Associate Program Director in 2020.  He is an Associate Professor in the Division of General Medicine and Clinical Epidemiology with the School of Medicine.  Dr. Berkowitz’s clinical and research interests include unmet basic resource needs, food insecurity and methods of causal inference.


Lisa Zerden, PhD, MSW
Program Associate Director 

Dr. Zerden became an Associate Program Director in 2024.  She is an Associate Professor in the School of Social Work.  Dr. Zerden’s research interests focus on the social drivers of health, including disparities that exacerbate drug use and behavioral health conditions.