21st Century Oncology has entered into a joint venture with a Washington state cancer clinic.
The company and its subsidiary, 21st Century Oncology of Washington, will own 80% of the newly formed joint venture with Northwest Cancer Clinic of Kennewick. The clinic's current physician leader, Dr. Sheila Rege, will hold 20% equity.
The deal expands 21st Century Oncology's reach into the northwestern U.S. market, the company said.
![A 53-year-old patient (patient number four) with a recurrent pituitary adenoma with extension of a cystic component of disease to the medial temporal lobe apparent on MRI (contoured in blue), and extension of disease to the left sphenoid bone and orbital apex apparent on [68Ga]Ga-DOTA-TATE (contoured in yellow).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/04/pituitary-tumor.QGsEnyB4bU.jpg?auto=format%2Ccompress&dpr=2&fit=crop&h=167&q=70&w=250)
