According to MedPage Today's coverage of Forbes' annual ranking, healthcare is a notable path to extreme wealth in the United States. Fifteen members of the Forbes 400 made their fortunes in the sector, underscoring the industry's financial weight.

Among those fifteen, four are physicians, a sign that medical training can translate into major business success. Topping the healthcare group is Thomas Frist Jr., MD, along with his family, who hold the highest position on the list.

The report highlights how deeply healthcare is woven into the fabric of American wealth, even as it leaves the specific fortunes of the other healthcare billionaires unnamed in the excerpt.