Nursing care for hospitalized patients with diabetes has become more complex as evidence accumulates that inpatient glycemic control improves outcomes. Previous studies have highlighted challenges for educators in providing inpatient diabetes education to nurses. In this article, the authors show that a unit-based diabetes nurse expert team model, developed and led by a diabetes clinical nurse specialist, effectively increased nurses' confidence and expertise in inpatient diabetes care. Adapting this model in other institutions may be a cost-effective way to improve inpatient diabetes care and safety as well as promote professional growth of staff nurses.