Minority Diabetes Initiative Act - Amends the Public Health Service Act to allow the Secretary of Health and Human Services (HHS) to make grants to public and nonprofit private health care providers to provide treatment for diabetes in minority communities. Requires the Secretary to ensure that such grants cover a variety of diabetes-related health care services, including routine care for diabetic patients, public education on diabetes prevention and control, eye care, foot care, and treatment for kidney disease and other complications of diabetes.