41. THOMAS FRIST JR. & FAMILY

$11.5

BILLION  SELF-MADE SCORE: & SOURCE: HOSPITALS AGE: 81 RESIDENCE: NASHVILLE PHILANTHROPY SCORE: The former Air Force flight surgeon cofounded HCA Healthcare with his father in 1968. Frist is no longer an executive at HCA but still owns a 20% stake in the company, which owns and operates 185 hospitals.