Drs. Rosaasen have active privileges at Simi Valley Adventist Hospital and do their own inpatient rounding as often as possible. Occasionally, there are insurance policies that require the use of hospitalists. Hospitalists are physicians, generally internists, who do ONLY hospital work. Our doctors use hospitalists if your insurance company directs us to use them, if you are admitted to the Intensive Care Unit or another hospital, or if they are out of town and unable to round. Our local hospitals, Simi Valley Adventist Hospital and Los Robles Hospital, are very good at sending us admission and discharge information. If you are admitted to another hospital, please let us know so that we can request a summary of your hospital stay.