Chief medical officer
Chief medical officer is the title used in many countries for the senior government official designated head of medical services, sometimes at the national level. The post is held by a physician who serves to advise and lead a team of medical experts on matters of public health importance.
The post of chief medical officer dates back to Victorian times. The equivalent title may go under different names across countries, for example, the Surgeon General of [the United States|Surgeon General] in the United States and the Chief Public [Health Officer of Canada|Chief Public Health Officer] in Canada.
By extension, chief medical officer is also used as a job title, for the physician who is the professional lead of all physicians at a hospital.