Implementation of electronic prescribing, also known as e-prescribing, has been one of the successes of health information technology and an advance in health care delivery. Clinician uptake of e-prescribing has been substantial, in part because it is now required by health plans, insurers, and hospitals. As of April 2014, 70% of physicians were e-prescribing, an increase from 7% who used e-prescribing in December 2008.1