Kathy A. Fields is an Assistant Professor of Dermatology at UCSF.  She is also the co-creator of Proactiv and co-founder of Rodan + Fields, leading her to amass a $1.5 billion net worth.  In 2018, Forbes listed her as number eighteen on its list of “America's Self-Made Women".  In the 1990s, Fields and Katie Rodan created the acne treatment Proactiv. In 2002, Fields and Rodan created the business Rodan + Fields, which primarily sold anti-aging products.  Fields has also published several best selling books.

Fields started her secondary education at Northwestern University, then transferred to the University of Florida where she completed her BS in Neurobiological Chemistry.  Following her undergraduate degree, Fields attended the University of Miami School of Medicine for a degree in medicine. She then completed her dermatology residency at the Stanford University School of Medicine.