Xinjiang/Uyghur restaurants near Boston?
No, I don't believe that there are. You'll find dishes like Cumin Lamb at Golden Garden in Belmont, and at Zoe's and Wang's in Somerville. Since Beijing Star closed, you can't get yang rou pao mo in the Boston area (yes, that's more of a Xi'an dish, but those kinds of lamb stews are not uncommon further West in China too). The excellent bread at the Helmand or the excellent da bing at Formosa Taipei in Lexington has reminded me of breads from Kashgar.
Beijing Star Restaurant
835 Main St, Waltham, MA 02451
315 Marrett Rd, Lexington, MA 02421
63 Concord Ave, Belmont, MA 02478