Evaluation of the Personal KinetiGraph™ (PKG™) to Improve Insight Into Parkinson's Disease Status

The primary objective is to understand the utility of Personal KinetiGraph movement recording system data in the clinical management of Parkinson's disease (PD) in routine clinical care at a movement disorders clinic. Specifically: 1. Measure medication use and clinical management plan changes in a large, multicenter cohort among participants undergoing a clinical assessment with an MDS in which the MDS reviews the participant's PKG during the clinical assessment in half of the enrolled participants (PKG + Group) and in half of the enrolled participants the MDS completes the clinical assessment without the PKG (PKG- Group). 2. Determine the association between frequency of medication changes, the PKG information, and other clinical assessments among participants with and without a PKG report of their PD motor status available to the clinician at the time of evaluation.