Q. Is a visiting levy to a shul obliged to announce he is a levy, so he will be given the second aliya? (See prior question).
A. Horav Shlomo Miller’s Shlit’a opinion is that a Levi does not have to inform he is a Levi in a shul where he is not known, unless a Cohen was called for the first aliya, and he is about to repeat again the brocho, since there is no other Levi. The visitor should then announce he is a Levi, to avoid the Cohen reciting a second brocho, that according to some Poskim is an unnecessary blessing. (See similar Piskei Teshuvos 135: 8: n. 51).
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a