Kathy Fields is an American dermatologist who has an estimated net worth of $550 million.

Kathy Fields started creating skin care products with her colleague, Katie Rodan during their dermatology residency at Stanford University School of Medicine and developed Proactiv Solution in 1995.

She and Rodan formed their own product brand, Rodan + Fields in 2002. A year later, it was purchased by Estee Lauder, but they reacquired it in 2007. Fields has frequently featured in several magazines such as Allure, SELF, and Glamour.

Fields received the Cosmetic Executive's Women's Award in 2003, along with Rodan for their creation of Proactiv Solution.

Kathy A. Fields is married and has 2 children.