Proton International Arkansas

Proton International Arkansas is the operating entity behind the Proton Center of Arkansas in Little Rock, a commercial proton beam radiation therapy center that treats cancer patients. The company is a joint venture involving UAMS, Arkansas Children's, Baptist Health, and a Proton International affiliate, and it operates Arkansas' first proton therapy facility. Its business is healthcare delivery rather than drug development, centered on delivering proton radiation for pediatric and adult oncology indications. The center uses IBA's ProteusONE system with pencil beam scanning and related image-guided treatment capabilities. Although the center remains open and active, public reports in 2025 and 2026 indicate financial covenant and bond-default stress tied to patient volumes and cash reserves.