[1] His mother was born and raised in Lebanon until immigrating to the United States in 1976 due to the Lebanese Civil War.

[2] Ratevosian's father was born in Siberia as a result of his paternal grandfather being sent there due to his anti-communist activism in the Armenian Soviet Socialist Republic.

[6] He worked as a national field organizer for the health action AIDS campaign of the Physicians for Human Rights.

[7] During the presidential transition of Joe Biden, Ratevosian served as a policy advisor on national security, COVID-19, and global health.

[7][3] In August 2021, he joined the Office of the United States Global AIDS Coordinator (S/GAC) as a senior advisor for health equity policy.

[7] In that role, Ratevosian assisted Nkengasong with strategic planning, hiring, policy development, and other front office management issues.

"[11] Ratevosian has proposed an American Dream Act which contains aspects of Medicare for All, a Green New Deal, and canceling student debt.

[14] In a 2024 op-ed cowritten with Laura Friedman, Ratevosian noted that "LGBTQI individuals who also belong to ethnic minority communities, such as Black, Latino, Asian, or Armenian, face disproportionate systemic injustices.

[2] In January 2020, he met Micheal Ighodaro, the director of global Policy advocacy at the Prevention Access Campaign.