In 1993, while Clark lived and practiced in Indiana, a former patient complained to the Indiana attorney general. An investigator for the Indiana Department of Health and a deputy attorney general visited her office incognito as part of a sting operation. Clark proceeded to test the investigator and "told him he had the HIV virus , but said that he did not have cancer." She told the investigator that she could cure his HIV in three minutes, but that he would "get it back" unless he committed to returning for six more appointments. She then ordered blood tests from a laboratory.
