Usa was born in Thailand. She lived and was educated in Bangkok. After her graduation from Srinakarinwirot University in 1976, she started her first career as a teacher of English at Vajiravudh College in Bangkok. Following this, she earned a Master’s degree in Higher and Adult Continuing Education in 1982 from Teachers College, Columbia University. Usa worked for Mahidol University in Bangkok as an Academic Affairs Officer before she returned to Teachers College and began working full-time at TC Library in 1988. Her responsibilities at TC library included supervising part-time employees at the Circulation & Reference Services and managing Reserve materials for faculty. Her interest and willingness to learn the new things has inspired her to earn two more Master’s degrees while working full-time at Teachers College. The areas of interest and specializations from these two graduate programs are International Educational Development with specialization in TESOL, and Communication, Computing and Technology in Education.
Currently, Usa is in charge of library acquisition at Materials Management, the Gottesman Libraries.
Usa's working experience and other social activities during her career at Teachers College, Columbia University include teaching Thai lessons as a tutor to American businessmen/women, researchers and students who plan to live and work in Thailand. Usa is well-known in the Thai community in New York for her voluntary work.