What exactly do Physicians in the CIA do?

Does anyone have any experience or sources/interviews of Physicians that work in the CIA? The CIA website here Physician — Central Intelligence Agency doesn't really offer much in detail about the duties and job description. There was an old thread here Cia back in 2007 that asked the same question and there wasn't much... What exactly do Physicians in the CIA do?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums