- January 1985 - Hospital opened its doors
- February 1986 - Western Washington Cancer Treatment Center opened
- October 1987 - Hospital became part of newly formed HealthTrust Inc.
- December 1989 - Cardiac Cath Lab opened
- October 1990 - Women's Services opened birthing suites
- April 1991 Name changed from Black Hills Community Hospital to Capital Medical Center
- July 1992 - Ambulatory Center opened
- February 1995 - Physician's Pavilion opened with 65,000 sq. ft. medical office space
- April 1996 - Hospital became part of Columbia/HCA
- October 1995 - ER/Registration opened
- May 1997 - Radiation Therapy w/addition of Olympia Radiology
- May 2000 - Parent company, Columbia/HCA became HCA
- November 2005 - Hospital became part of Capella Healthcare
- March 2006 - Interventional Radiology Services opened
- Early 2008 - Radiation Therapy Services scheduled to open
