
Nneka Emenyonu
Program Director
Dr. Nneka Emenyonu serves as Program Director for the CALIBER Institute, supporting interdisciplinary research, investigator development, and community-engaged initiatives. Her work advances collaborative programs that improve HIV prevention and care
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John Sauceda
Co-Director
Dr. John Sauceda is an Associate Professor in Residence at UCSF and Co-Director of the DICE & Pilot Core within the CALIBER Institute. His research develops behavioral interventions that reduce HIV disparities while mentoring the next generation of public health investigators.


Phyllis Tien
Principal Investigator
Dr. Phyllis Tien is a Professor of Medicine at UCSF and Chief of the Infectious Diseases Division at the San Francisco VA Health Care System. She co-leads the CALIBER Institute, where her research focuses on HIV, chronic viral infections, liver disease, and long-term health outcomes.

