Who is the operational head of the U$.$S$.$ Public Health Service Commissioned Corps, often referred to as $$The Nation$$s Doctor$,$ and is considered the leading governmental public health spokesperson? Who is the operational head of the U$.$S$.$ Public Health Service Commissioned Corps, often referred to as $$The Nation$$s Doctor$,$ and is considered the leading governmental public health spokesperson? The Surgeon General The Secretary of the Centers for Medicare and Medicaid Services The Chief Medical Director The Secretary of Health and Human Services