Oncology Services International

Oncology Services International (OSI) is a leading independent service organization specializing in the maintenance, repair, and refurbishment of radiation oncology equipment. The company primarily focuses on linear accelerators (LINACs) from major manufacturers such as Varian and Elekta, offering hospitals and clinics a cost-effective alternative to original equipment manufacturer (OEM) service contracts. In addition to field service, OSI provides a vast inventory of certified pre-owned parts and sells refurbished radiation therapy systems globally. The company was acquired by Avante Health Solutions, integrating its expertise into a broader platform of medical equipment lifecycle management.