The Iowa Direct Care Worker Registry contains a list of individuals certified to work as nursing assistants in Iowa. A direct care worker certified as a nurse aide has a personal home page on the Iowa Direct Care Worker Registry. After the initial registration, the nurse aide may sign into the registry, and make changes to her name and contact information, or print a certified nursing assistant identification card. Each nurse aide is responsible for keeping his or her information current on the registry. This information includes name, address, and job changes.