Most recently in 2009 he was awarded the Bronze Medal for his collaborative projects with international NGOs, medical professionals and the Khmer-Soviet Friendship Hospital.
In 1994 he was among ten doctors chosen for specialized four years of surgical training with Inter-University Ghent-Phnom Penh, which included a one-year fellowship for head and neck and plastic surgery in Ghent, Belgium.
He spent four weeks observing pediatric plastic surgery, craniofacial and upper limb trauma, and microsurgery in four Edmonton hospitals.
In 2003, Theavy was featured in a documentary produced by USC's Annenberg Center for Communication that chronicled Operation Smile's efforts in Cambodia.
In recognition of his efforts to build the surgical profession, Theavy was appointed as a committee member of the Cambodian Society of Surgery in 2002.