Is the billers signature required on box 31 of the CMS-1500? We have been asked to sign our name at the bottom of this box. I was under the impression that the physician name & credentials should suffice. Is it necessary to sign the form as well? Your input is greatly appreciated. Thank You![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)