Physicians for Human Rights (PHR) is a US-based not-for-profit human rights NGO that uses medicine and science to document and advocate against mass atrocities and severe human rights violations around the world. PHR headquarters are in New York City,[1][2] with offices in Boston and Washington, D.C.[2] It was established in 1986 to use the unique skills and credibility of health professionals to advocate for persecuted health workers, prevent torture, document mass atrocities, and hold those who violate human rights accountable.