Background and Purpose: Rehabilitation therapists do not consistently utilize standardized outcome measures. The purpose of this study was to develop and implement a tailored knowledge translation (KT) intervention to facilitate application of standardized outcome measures used in patients with Parkinson disease (PD) receiving outpatient rehabilitation. Methods: Four clinics within a hospital-based outpatient system including physical therapists (n = 7) and occupational therapists (n = 2) collaborated with researcher clinicians. A mixed-methods study, using the knowledge to action (KTA) framework, was executed to standardize the assessment battery completed on patients with PD. The project was titled iKNOW-PD (integrating KNOWledge translation for Parkinson Disease). Results: Four measures were selected for iKNOW-PD (9-Hole Peg Test, miniBESTest, 10-m walk test, and 5 times sit-to-stand). A multimodal intervention that overcame specific identified barriers (equipment, time) was implemented to ensure successful uptake. Consistency of utilizing iKNOW-PD measures on initial evaluation and discharge, across therapists and clinics, was evaluated. Therapists significantly increased the use of iKNOW-PD measures from 1.9 to 3.1 on initial evaluation (P < 0.001). The 10-meter walk test demonstrated the greatest uptake (>50%) from pre-iKNOW-PD to post-iKNOW-PD. Discussion and Conclusions: Standardizing outcome assessment for persons with PD in an outpatient setting can be successfully implemented. Overcoming identified barriers and capitalizing on facilitators promoted the uptake of standardized outcomes. Following the 6-month intervention period, therapists endorsed an improvement in their application of standardized measures and labeled iKNOW-PD as a positive experience that allowed them to minimize variability in practice. Video Abstract available for more insights from the authors (see the Video, Supplemental Content 1, available at: http://links.lww.com/JNPT/A329).