Which government organization is responsible for improving health through access to health services?

The Health Resources and Services Administration (HRSA) works to improve health by expanding access to health care services, especially for underserved communities. The NIH primarily conducts biomedical research, the CDC focuses on public health and disease prevention, and the NCBI provides biomedical information resources. Therefore, the correct choice is Health Resources and Services Administration (HRSA).

AI-written and checked against the verified answer.