Murray was charged with and pleaded not guilty to involuntary manslaughter in February after coroners ruled Jackson's death a homicide caused by acute propofol intoxication.
Prosecutors produced witnesses who testified that Murray administered propofol and left Jackson alone. Murray's lawyers raised the possibility that Jackson had administered the final dose, causing his own death.
After a six-day preliminary hearing, Superior Court Judge Michael Paster concluded on Tuesday that the prosecution provided sufficient evidence that Conrad was at fault for the 50-year-old pop star's death. In addition, the judge granted the California Medical Board's request to suspend Murray's license.
Murray is expected in court on January 25, where the judge will set a trial date.