The main objective of the current study was to ascertain the efficacy of a newly developed online, video-based dementia training and certification program for hospital staff, the CARES® Dementia 5-Step Method for Hospitals™ Online Training and Certification Program. A parallel randomized waitlist control design was utilized. Participants (N = 272) completed online pre-evaluation measures. Forty-five days after completion of CARES® (treatment) or pre-evaluation measures (control), participants completed a post-evaluation online assessment. Analyses of variance found that participants in the treatment condition indicated greater and statistically significant (p < .001) increases in sense of competence, approaches to dementia, and patient care. The results implied that the CARES® Dementia 5-Step Method for Hospitals™ program could serve as a dynamic resource for hospitals nationwide to update training and share experiences, perspectives, and resources. The inherent scalability of the program regarding its acceptability, feasibility, and potential to incorporate seamlessly into routine workflows and staff training suggests high implementation potential.