According to a Twitter post from @TheDrewStarr, Crazy Dough's Pizza on Boylston Street is no longer in business, with a sign out front saying "we thank you for 18 years of support!" No reason has been given for its closure as of yet, and a check on the Crazy Dough's website simply shows that it has been removed from the locations section. Based on the website, it appears that shops at City Place by Park Plaza, the Prudential Center, TD Garden, Brighton, and Newport, RI, remain in operation.
Another location of Crazy Dough's in Cambridge's Harvard Square shut its doors in March of 2016.
The address for the now-closed Crazy Dough's in the Fenway/Back Bay area was 1124 Boylston Street, Boston, MA, 02215. The website for all other locations can be found at http://www.crazydoughs.com/
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[Related article from our sister site (Boston's Hidden Restaurants): Slideshow--Twelve Pizzas in the Boston Area and Beyond]