4. Gary Michelson
Net worth: 1.7 Billion
Dr. Gary Michelson, the next one in our list of richest doctors in the world is an orthopedic and spinal surgeon. He dedicated his entire life to medical science and has over 250 US patents for various medical devices and procedures. He achieved his billionaire status in 2005, when he finally came to a settlement with Medtronic for patents he invented. That landed him the fortune of $1.35 billion dollars. After that, he invested in various fields of business like, real estate, timber, energy, etc., and his business ventures have been successful so far.
