Crosby is notable for serving as the director of medical care at the Boston Center for Refugee Health and Human Rights.
[3] According to Physicians for Human Rights Crosby has "written over 200 affidavits documenting medical and psychological sequelae of torture."
In October 2009 Crosby submitted an affidavit following her examination of Guantanamo's longest term hunger striker, Abdul Rahman Shalabi.
In October 2012 Crosby wrote a letter about Tariq al-Sawah's medical condition to camp authorities.
His lawyer, Lieutenant Colonel Sean Gleason, said in March 2013 that camp authorities had declined to treat al-Sawah, and wouldn't even release his medical records.