- Boston, MADate of first commercial TAVR procedure performed*:Nov, 2011TAVR Total Commercial VolumeCumulative volume since program inception:2456Average annual volume for reporting period:27930-Day Risk Adjusted TAVR Composite 1,2,3Reporting Period:October 1, 2020 through September 30, 2023Eligible procedures in reporting period:841TAVR 30 Day Composite Score**:0.00( -0.02 , 0.01)0% (-0.02, 0.01)Site ScoreSite Credible IntervalTVT RangeTVT Average ScoreTAVR 30-Day Composite Rating**