Some people get some quotes from happy students.
Here's a STUDY that was PUBLISHED on how a student was helped just by telephone tutoring with Dr. Josh!
And here are some more conventional testimonials:
Dr. Joshua,
How are you doing? It’s been a long time since we have corresponded. But I truly will not forget the tutoring for those crucial USMLE step 3 exams.
Being a foreign medical graduate, it was a great enriching experience to be tutored by Dr. Joshua and understand the nuances of USMLE Step 3 Boards. 
Prasanna Kumar 
To: Josh Grossman
Sent: Thursday, October 06, 2011 9:31 AM
Subject: Thank You for your help. I have passed my Oral Boards.
Dear Dr Josh,
Thank you for our weekly telephone study sessions. Your assistance made the difference. I have passed Part 2. Your unique knowledge of Psychiatry and Medicine was exactly what I needed to successfully negotiate "The Boards". Studying with you was informative and pleasant. The dept of your knowledge is phenomenal and I look forward to continued conversations with you.
Again, Thank You.
Dr Paris