6. Kathy Fields
Net worth: $320 Million
Dr. Kathy Fields, the next one in our list of richest doctors in the world is a dermatologist, and the co-founder of Proactive Solutions along with our previous entry Katie Rodan. She is also estimated to have a net worth of $320 million. Dr. Kathy Fields is currently working as an assistant dermatology professor at the University of California, San Francisco, while also having her private practice. However, the majority of her wealth comes from Proactive Solutions.
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