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Staci Bush, PA

Staci Bush, PA

Senior Medical Director, Prevention


Staci Bush commands a diverse knowledge base in HIV prevention strategy and public health in her role as Senior Medical Director of Prevention for ViiV Healthcare. As a relationship-savvy leader, she has built an array of alliances between medical professionals and researchers, domestic and international governments, advocates, and allies. Her efforts in the HIV arena have created an indelible mark on HIV prevention through pinpoint messaging, scientific research, and engaging dialogue. She fosters a global connectedness extending beyond industry through her passion for helping the most vulnerable people. Driven by her belief that no one should face stigma, shame, or limitations due to a virus, Staci is proud to be part of ViiV and share in the company’s determination to end the HIV/AIDS epidemic while increasing innovation and access, leaving no person behind. 

Current Role

Staci joined ViiV in late 2020 as Senior Medical Director, Prevention for North America Medical Affairs (NAMA), responsible for building a new therapeutic area for ViiV. She assists in strategy development supporting US Food and Drug Administration approval and launch readiness for the first injectable HIV pre-exposure prophylaxis (PrEP) product. In her role, Staci formulates and aligns messaging with ViiV Global Medical Affairs, Medical Information teams, and NAMA. She also supports sales team training, oversees promotional review, and develops useful training tools for Medical Science Liaisons, Regional Directors, and external speakers.


Before joining ViiV, Staci was most recently at Gilead Sciences in Foster City, California, for over ten years. As the Global Executive Director for PrEP, she developed and executed the global and US HIV Prevention Medical Affairs Indication Strategic Plan for a major HIV prevention product, including launch strategies. She also supported HIV Prevention pipeline development strategy and led content development for internal teams and external advisory boards. Serving as the HIV prevention expert for numerous cross-functional teams, Staci assisted in product development, outcomes research, market access, and government policy. She contributed to developing global, regional, and national medical plans of action and ensured their implementation. Staci exemplified this by creating a digital campaign in South Africa through a partnership with PEPFAR (United States President’s Emergency Plan for AIDS Relief), the Elton John Foundation, and others. In earlier roles at Gilead, Staci was Global Director for Medical Education and Learning & Development in Access Operations and Emerging Markets. She led a lean division in ongoing sales strategy and team development and launched HIV, hepatitis C, hepatitis B, and anti-fungal products in 140 countries. As Executive Director of Medical Affairs, she helped shape the global HIV prevention landscape, delivering scientific presentations worldwide. Staci also was a Medical Science Liaison in her initial years with Gilead. 

While based in Chicago, Staci practiced HIV and adolescent medicine at Howard Brown Health Center, culminating in her coauthoring in 2008 the adolescent chapter of The Fenway Guide to Lesbian, Gay, Transgender and Bisexual Medicine, the first comprehensive LGBTQ medical book. In Chicago, she also held positions as Medical Director at Harwin Health Center, Physician Assistant at Swedish Covenant Hospital, HIV Director at Clinical Care Options, and Medical Science Liaison at Monogram Biosciences. Staci’s research interests include the differences in utilization of prevention modalities across age, race, gender, and geography lines.


Staci received her Physician Assistant Certification from Charles R. Drew University of Medicine and Science in Los Angeles, and her BA from the University of California, Berkeley.

Personal Interests

Staci lives in North Carolina, where she enjoys boxing, playing tennis, baking with her 5-year old daughter, and entertaining friends.

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