Assembly Bill 571 establishes a statewide Parkinson's disease registry under the Department of Population Health Sciences at the University of Wisconsin-Madison. The bill mandates that healthcare providers report data on patients diagnosed with Parkinson's disease or related parkinsonisms to the registry, which will collect information on the incidence, prevalence, and outcomes associated with these conditions. If a patient opts out of participating in the registry, only the diagnosis will be reported. The bill also requires the creation of a public website to disseminate annual reports and relevant data about Parkinson's disease in Wisconsin.

Additionally, the bill includes provisions for confidentiality, ensuring that any identifying information about individuals reported to the registry is kept confidential and coded to protect privacy. The University of Wisconsin-Madison is authorized to share data with other state registries, federal agencies, and researchers, provided that confidentiality agreements are in place. The bill also outlines the responsibilities of the Department of Health Services in assisting with the registry's establishment and maintenance, as well as the specific data that must be collected and reported.