By Jake Jones

The Trump administration just replaced the country's top medical officer: the surgeon general. And, it's someone who's not a medical doctor.

Obama-appointee Vivek Murthy was asked to resign Friday. His replacement: Rear Adm. Sylvia Trent-Adams, a nurse who was serving as the deputy surgeon general.

Trent-Adams isn't the first nurse to hold the position, which doesn't actually require someone to be a physician.

Surgeons general rarely make news unless they challenge the president politically. Murthy made waves during his nomination because of his opinion that gun violence constitutes a public health threat. He's also been a vocal supporter of Obamacare.

Trent-Adams has worked in public health since 1992. She served as an Army nurse officer and holds a bachelor's degree in nursing, a master's degree in nursing and health policy, and a doctorate in philosophy.

Prior to her role as deputy surgeon general, Dr. Trent-Adams served as CNO of the U.S. Public Health Service Commissioned Corps, according to her profile on the HHS website. Before that, she was deputy associate administrator for the HIV/AIDS bureau of the Health Resources and Services Administration. She served as a nurse officer in the U.S. Army and a research nurse at the University of Maryland in Baltimore, where she earned her PhD.