While working as an internist at an outpatient clinic, I would see physician performance reports that would tell me little more than if I was doing “good” or “bad.” There was no way to know how I compared to others. My colleagues, who also received these reports, and I didn’t trust the numbers either. In short, the reports were useless. Then, I discovered creating reports with a data warehouse. This addresses issues in six ways: 1. There is a cleaner data set and physicians don’t need to worry about fixing the data. 2. It addresses the “but my patients are different” argument. 3. The information is up-to-date. 4. The data is granular and detailed. 5. Physicians take ownership of the data because they are involved in the process. 6. Finally, it saves valuable time. When reports are created this way, physicians can make real change in their behavior and improve patient outcomes.