Introduction: Over the past decade, informaticists expressed dissatisfaction with their training, feeling unprepared for the demands of their role. To address this, we developed the Tiered Skills Acquisition Model (TSAM) program in 2023 to improve the onboarding process of new hires. The goal in evaluating TSAM was to assess its effectiveness and refine training methodologies to build a stronger, more resilient team of informaticists. Methods: A comprehensive literature review of nursing and informatics training methodologies informed the development of the evaluation framework. Both qualitative and quantitative methods were used, including participant surveys and performance metrics as well as a human resources data report. Qualitative data were analyzed for recurring themes, while quantitative data was statistical assessed. Results: The evaluation highlighted TSAM's strong impact, with all 11 preceptees achieving EPIC certification (100% pass rate). No significant link was found between tenure and perceived competence, confidence, or job satisfaction, showing consistent support across all experience levels. TSAM also boosted job and training satisfaction, and those with just one month of tenure felt significantly more prepared than longer-tenured staff. The program was highly cost-effective when looking at staff retention and turnover, saving an estimated $1 to $4.8 million (Gallup, 2019). Conclusions: TSAM demonstrates strong early effectiveness, but future improvements should focus on long-term support and refining the orientation process to maintain its impact over time. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]