There are about 1300 transplant nephrologists in the US: https://www.kidneynews.org/view/journals/kidney-news/13/7/article-p14_11.xml https://www.kidneynews.org

There are about 1300 transplant nephrologists in the US: https://www.kidneynews.org/view/journals/kidney-news/13/7/article-p14_11.xml https://www.kidneynews.org/view/journals/kidney-news/13/7/ar... They make their money from transplants, not from dialysis. If you want an artificial kidney, a transplant surgeon is what you need, and for them, artificial kidneys are just more business.