Within my wellness practice, I have a few doctors as clients.  They tend to be interested in the sciences I work with due to the clinical studies. I measure results with clients by improvement in blood work, reduction of tumors, sleeping full nights,no more panic attacks, and with the help of their doctors reduction in medication.  There are many markers to the work I do with clients health and mental well being, and I do believe measuring results is important in building a reputation in why people would benefit from paying out of pocket for wellness services.