Swedish Medical Center is asking about 2,900 patients to get tested for HIV, hepatitis B and hepatitis C after discovering that a former employee may have stolen narcotic pain medicines. Sgt. Brian Cousineau of the Englewood Police Department said police are investigating 28-year-old Rocky Allen. The surgical technologist worked in operating rooms at the hospital from Aug. 17 to Jan. 22, officials said Wednesday, and could have put at risk patients who had surgery during that time. The hospital announced it is investigating possible exposures with the state Department of Public Health and Environment and is reaching out to patients.