St. Joseph Regional Medical Center has announced it will buy Lewiston-based Catalyst Medical Group, according to a news release sent Tuesday. The acquisition will include Valley Medical Center and Lewiston Orthopedics, which are a part of CMG. Catalyst was originally formed in 2016 as a physician-owned medical group led by a six-person board that united the employees at Moscow Family Medicine, Lewiston Orthopedics and Lewiston's Valley Medical Center under one umbrella. As of its formation in 2016, CMG had 68 medical professionals including physicians, nurse practitioners and physician assistants. Patients will still be able to see the same providers at CMG or St. Joe’s as they do currently, according to the news release.