A doctor accused of prescribing pain killers to three young men who died was ordered Tuesday to stand trial for second-degree murder in the overdose deaths.

Dr. Hsui-Ying "Lisa" Tseng is one of only a handful of doctors nationwide to be charged with murder related to prescription drugs.

The decision by Superior Court Judge M.L. Villar de Longoria to send Tseng to trial came after a three-week preliminary hearing where she was portrayed as the go-to doctor for people seeking drugs.

Young men told of coming to Tseng after using up prescriptions from other physicians. A few testified under grants of immunity.

There was testimony about a total of 12 of Tseng's patients who died of drug overdoses. Only three deaths were charged by prosecutors as solely caused by her prescriptions.

Some patients acknowledged using illegal drugs such as heroin that they did not get from Tseng. She was charged with prescribing Xanax, oxycodone, methadone, Soma, and other drugs.