The Notice of Award (NoA), the official notification that your grant has been funded, is emailed to the grantee organization for your grant application, with a copy to the PI/PD. The NLM program officer assigned to the grant may contact the principal investigator to give informal news of an award, but the NoA is the official documentation. When NIH issues the NoA, the document is made available to grantee officials and corresponding PD/PIs in the eRA Commons through the Status module. The eRA Commons is the official repository for the NoA document. See here for an explanation of the Notice of Award.