7. Katie Rodan
Net worth: $320 Million
Dr. Katie Rodan is a graduate of University of Southern California School of Medicine. She is a dermatologist, however, her massive fortune did not come from practice. Rather from a highly successful company, Proactive Solution, which she co-founded along with her partner Kathy Fields. Dr. Katie Rodan is working as Adjunct Clinical Assistant Professor of Dermatology at Stanford University School of Medicine, while also running her own private practice.