Again, the "medical information" on his main page is incorrect. It's garbage, not true, crap. Don't believe it. Masturbation is very healthy.
If he has done everything by himself, that is not a good sign. When doctors do research and when new medicines are being tested, many people are supposed to be involved if it is being done legitimately. The fact that he does this by himself is even more evidence that he is a quack. There is a process that has to be followed. You can't just do it by yourself in your basement.
Doctors often are busy, but if he has time to write garbage on the internet, he should have time to answer your emails.