Today I try to answer one question:
Do you need an MD and a PhD to become a healthcare self-made billionaire?

Let's take a look at Robert Duggan.  He is a college dropout that made it in healthcare with cancer drug.




Robert Duggan
Age 72  Net Worth $3.2B   Forbes 8/2016
Citizen US    Born US
Self-made in Cancer Drug

EDUCATION    Drop out  UC Santa Barbara
                           Drop out  UCLA

To kill two birds with one stone, I have here a bonus question:
How long does it take to become a healthcare self-made billionaires?

Answer: it could be as short as 12 year.
Mr Robert Duggan above offers a good example.
In 2004, his son died of cancer.  He knew nothing about cancer, but was determined to set all his heart and soul to the single purpose of combating cancer.   He shows that someone without a MD, without a PhD, without a college degree, could accomplish in a dozen years.

He had a blockbluster cancer drug called Imbruvica, a potent, blockbuster treatment for chronic lymphocytic leukemia that drug giant AbbVie coveted. Robert Duggan his biotech firm Pharmacyclics in May 2015 to AbbVie for $21 billion, earning $3.5 billion in cash and stock from the deal before taxes. 

At age 71, he became healthcare self-made billionaires.