Our Leadership Team

Fei Mao has over 30 years of industry experience in areas of fluorescent dyes, medical devices and pharmaceutical chemistry. Fei is a passionate scientist and prolific inventor, with 134 granted US patents and 142 pending US patents. Many of his inventions are widely used as life science research tools and consumer products. Fei Mao holds a PhD in Inorganic Chemistry from the University of Oregon.

Vivien Chen is a co-founder of Biotium and is responsible for all aspects of marketing including high-level strategy, contract negotiations, and corporate marketing operations. Under her leadership Biotium has successfully negotiated dozens of commercial license and OEM agreements with many major life science companies. Vivien holds an MBA from Portland State University.

Wai-Yee Leung has served as VP of Research and Development at Biotium since 2010. He drives the research responsible for producing some of the most valuable products and intellectual property at Biotium. Wai-Yee is named on 53 patents and has published 14 peer-reviewed scientific articles. Wai-Yee Leung holds a PhD in Chemistry from Michigan State University.

As Director of Bioscience, Lori Roberts leads a team that works closely with Biotium chemists to turn our novel fluorescent reagents into valuable biological assays. Her expert team also provides users with in-depth technical advice and support. Before joining Biotium in 2010, Lori performed research at Genentech and XenoPort, applying a variety of fluorescence imaging approaches to cellular, developmental, and physiological questions. Lori earned her PhD in Biomedical Sciences from UCSF and a BA in Biology from Reed College.

As Director of Manufacturing at Biotium, Patrick McGarraugh oversees all ISO 9001:2015 certified production and quality control processes. He ensures our products consistently meet the highest quality standards, delivering reliable and compliant solutions to customers with every order. With expertise in organic chemistry, Patrick also plays a key role in R&D, contributing to the development of novel fluorescent dyes. Patrick earned his PhD in organic chemistry from the City University of New York.

Alexis Madrid has been with Biotium since 2014, working in the Bioscience group to develop new products for molecular biology and cell biology applications. In particular, she has been instrumental in the development of products for extracellular vesicle research, dyes and antibodies for flow cytometry, and viability PCR reagents. Prior to joining the team at Biotium, Alexis earned her PhD from UC Berkeley in Molecular and Cell Biology, and then completed a postdoc at UCSF & Novartis studying virology.