The REMS Program Companies (RPC) assigns a unique identifier (RPC ID) to each activity for which it provides commercial support. Accredited providers that offer RPC-supported REMS activities are responsible for entering the RPC ID in the designated field in the REMS section of the Program and Activity Reporting System (PARS). This ensures that their RPC-supported activities can be identified and reported to the RPC and, ultimately, to the FDA. If you are an accredited provider that has received commercial support from the RPC for REMS activities and you have questions about the RPC ID, please contact the RPC.