LOS ANGELES — A Southern California doctor is one of 10 people charged with selling opioid prescriptions for cash through medical clinics that authorities labeled as shams.

Federal grand jury indictments accuse the 68-year-old physician and others working under his guidance of prescribing more than 439,000 pills of high-dose oxycodone. Prosecutors say patients paid for the medically unnecessary prescriptions at a Santa Ana pain management clinic.

The other defendants range in age from 23 to 69 years old. Seven are under arrest and two are fugitives. Authorities seized more than 20,000 oxycodone pills, and $177,000 in cash.