Sent info and mailed images on 5/7, received diagnostic and treatment plan 5/23. The Skype consult with Dr. Bierstedt was about a week later. Remember that part of the time frame may depend on if your films arrive the day before or the day after Dr. Bierstedt's review day. My surgery was 7/16, there were earlier dates but my wife is a teacher and we wanted to wait for her to be on break.
Remember that with the Prodisk or any hardisk there is >50% wear to your facet joints. My facet joints at L4/L5 were graded at a hight 2 so a contraindications for a hard disc, M6 can be used up to a grade of 3. Even w/out facet wear a hard disc will definitely cause more wear-maybe facet joints wear out before your disc or M6? It might be worth scheduling a consult with Dr Bierstedt to discuss in more detail, he knows more than me