What many do not know about Invisalign is the fact that they have tiers for the orthodontists that complete Invisalign treatments. These tiers represent the orthodontists who provide revolutionary treatments and have been trained by the creators of Invisalign to reach the status of a certified provider. The four tiers that are provided to certified Invisalign providers correspond with the number of Invisalign cases each orthodontist has completed:   - Preferred Provider This is the first level that is reached. The providers that reach this level perform an average of 10 cases each year.   - Premier Provider This second level is reached by orthodontists who perform 50 cases of Invisalign total and continue to perform around 25 cases every 6 months.   - Elite Provider This is the third level that can be reached and has a minimum of 300 cases total, with orthodontists performing an average of 300 cases per year.   - Top 1% Provider This is the top and final level, which is reached when the orthodontist treats an average of 800 cases total and continues to complete an average of 200 cases per year.