How Wealthy Are These Family Dynasties?

The Frist Family

Fortune: $11.9BBusiness: Hospital Corporation of America Industry: HospitalsFamous Member: Thomas Frist, Jr.

Thomas Frist is Tennessee’s richest man, and one of America’s richest men. He and his father created the Hospital Corporation of America in the 1960s, and the family has never been the same.

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Together, they grew it past the billion-dollar mark in just a few years. From there, they chaired massive businesses including IBM. In 2009, he left the company to his son, Billy. By then, it was one of the biggest companies in the world.