At the University of Texas M.D. Anderson Cancer Center, we developed and implemented access to our electronic medical record for patients and their referring physicians by using our electronic medical record and a secure Web-based portal. Despite physician concerns that the system would increase workload and create unnecessary anxiety for patients, few have voiced complaints since the system went live in May 2009. Despite little promotion of the site to patients, to date more than 40 000 individuals have viewed their records over 605 000 times. In that same period, more than 1300 referring physicians accessed the records of the patients they referred to us over 28 000 times. Currently, 84% of our active patients have obtained access to their electronic records. As a result, they are more informed about their care plan and diagnostic results and ask smarter, more focused questions. There have been no adverse consequences and generally positive feedback from patients and physicians. Although physicians occasionally complain about the time it takes to explain something they wrote, feedback from both patients and physicians has generally been positive. Patients have become avid readers of their notes—their 2 most common requests are for a correction of something recorded incorrectly and for a simple method of translating medical terminology within the record. Our referring physicians are happy with the tool, and we are planning to cease mailing records to referring physicians.