DR Pezzi???
Scroll to the bottom half of this page:
sexualtips.net/penis_size_questions_and_answers.htm
Then read other parts of the site like this:
sexualtips.net/sex_expert.htm
Seems he knows what hes talking about. I tried to find a link to contact him, but paypal charges exist to varying degrees.
I am sure he does know a few tricks when it comes to boosting sexual performance (yohimbine works) but the guy is probably one of the biggest quacks/ frauds going.
huffingtonpost.com/2010/08/05/kevin-pezzi-big-governmen_n_672300.html
It’s ironic that you brought him up on here because he actually proposes the use of finasteride to increase penis size. He claims that using finasteride for 6 months causes a ‘DHT drought’ and using DHT gel as you quit the drug will induce a ‘second puberty’ and increase penis size. 
Given that we have all experienced pretty much the exact opposite, i think it’s safe to say that we don’t need his advice/ help.