Dr Singh is the chairman of One Globe Forum. In his former role, he has been the National Secretary of the Indian National Congress. He also has had a brief and distinguished career in the Army during which he participated in counter-insurgency operations and tutored at the Army Combat School. He is the founder-president of the Global Coalition Against Tuberculosis (GCAT) and serves as the advisor to the Board of Girl Rising India, a civil society organization for the empowerment of underprivileged girls supported by USAID. He has supervised political assignments in the north-eastern region which is dominated by tribal and marginalized communities. He has contributed to strategizing and planning of public health, education, and welfare programs.