@krisjb1 Good question! The highest level of training with the John Barnes methods are called "Expert" level. Therapists need to come back every few years for refresher courses and more advanced skill courses to maintain that certification and have completed a standard set of coursework. When you find a list of therapists at http://mfrtherapists.com/ , it tells you their certification level, and this list is only people who have trained with John Barnes and his staff. Some patients go to his practice in either Sedona, AZ called Therapy on the Rocks or to his other Pennsylvania location for intensive week long therapy. That is expensive, and some patients prefer to do this.
https://therapyontherocks.net/

I also just ran across the John Barnes You Tube Channel which you can see here:
https://www.youtube.com/channel/UCQzQ2H45q9mFHjyBAoWfoxQ

He's older now, and may not be practicing as a therapist himself now due to his health. My therapists is an expert level and she is fantastic. I tried the map in the therapist locator and when you click on the pins for the therapists it states on the balloon that comes up how advanced they are. "Expert" is the highest. You can also call Therapy on the Rocks and ask for a therapist in your area.