He was elected to the Lok Sabha, the lower house of the Parliament of India from Gopalganj in the 2019 Indian general election as member of the Janata Dal (United).

[1] Suman was born in a poor family at Jadopur Dukhaharan, Gopalganj district, Bihar.

He worked as child labourer on farms to meet daily needs and to continue his primary education.

After completing high school, he went to Patna Science College for his Indian School Certificate and then did his Bachelor of Medicine Bachelor of Surgery (MBBS) and Master of Surgery (MS) from Patna Medical College and Hospital.

[2] After his education, he worked as a resident doctor in Rammanohar Lohia Hospital, Delhi and retired as deputy director in Govt.