Pharmacogenomics (PGx) can enhance the accuracy of targeting patient therapy by enabling the use of an individual’s genome to assist predict drug response and guide optimal drug and dose selection. Ultimately, the goal is to provide safer, more impactful, and cost-effective treatment in patient therapy. Traditionally, pharmacogenomics is implemented reactively when there is a need to prescribe a high-risk drug. This is often expensive and suffers from a slow turnaround time. The field now recognizes the results and recommendations from pharmacogenomic profiling should be available preemptively in electronic health records and drug prescription systems.