Updated to include 2019 and the 2021 shows I'm planning in November:
Orpheum Theatre, Boston, MA - 7x (2004, 2006, 2008, 2011, 2016, 2017, 2019)
Bank of America Pavilion, Boston, MA - 4x (2005, 2007, 2009, 2012)
Oakdale Theatre, Wallingford, CT - 3x (2006, 2007, 2021)
Worcester Palladium, Worcester, MA - 2x (2004, 2010)
Great Woods, Mansfield, MA - 1x (1998)
Radio City Music Hall, New York, NY - 1x (2006)
University of Buffalo Center For the Arts, Buffalo, NY - 1x (2007)
PNC Bank Art Center, Holmdel, NJ - 1x (2007)
Jones Beach, Wantagh, NY - 1x (2007)
Boston Opera House, Boston, MA - 1x (2014)
Hanover Theater, Worcester, MA - 1x (2016)
Palace Theater, Albany, NY - 1x (2019)
Boch Center, Boston, MA - 1x (2021)
25 Shows, 13 Venues, 9 Cities