California Parkinson’s Disease Registry

California Health and Safety Code (HSC) 103870-103870.2 requires healthcare providers diagnosing or providing treatment to Parkinson’s disease patients to report each case of Parkinson’s disease to the California Department of Public Health beginning July 1, 2018. The Richard Paul Hemann California Parkinson’s Disease Registry (CPDR) is a statewide population-based registry that will be used to measure the incidence and prevalence of Parkinson’s disease.

Surprisingly, little is known about how Parkinson’s disease is distributed among different population groups and whether the patterns of disease are changing over time. California’s large and diverse population makes it ideal for providing important information about this disease. CPDR will expand our understanding of Parkinson’s disease to ultimately improve the lives of those affected.

Landmark Moment in Search for Parkinson’s Biomarker The Michael J. Fox Foundation announced the most significant breakthrough to date in the search for a Parkinson’s biomarker: a highly accurate biological test for Parkinson’s disease. The test is capable of objectively and reliably detecting the disease at the molecular level — even before the onset of symptoms. This is the first biomarker capable of identifying people with Parkinson’s, or those at risk for Parkinson’s, through abnormal alpha-synuclein — the hallmark protein that misfolds in Parkinson’s — in the living brain.

Data Submission Deadlines:

*For inpatient settings, the discharge date may be used as the date of the patient encounter.

Note: CPDR will continue to accept case reports from previous reporting periods.

Fact Sheets

• California Parkinson’s Disease Registry (CPDR) Program Summary, March 2024 (pdf 301 KB)
  
• California Parkinson’s Disease Registry Program Summary, April 2022 (pdf 403 KB)
  
• California Parkinson’s Disease Registry Program Summary, February 2021 (pdf 346 KB)
• California Parkinson’s Disease Registry Program Summary, June 2020 (pdf 375 KB)​