This is the American Greed Podcast presented by

CNBC. I'm Stacy Kich.

In this episode of American Greed,

LA Dr Lisa Singh is making millions prescribing powerful painkillers.

Lisa Singh sold thousands of prescriptions for cash.

But her profits come at a terrible cost.

Joey went to sleep after this party and just never woke up.

Lisa Singh is no run-of-the-pill mill Dr. Fieldgood.

She's a cold-hearted murderer in a lab coat.

We don't have medicine being practiced here.

We have a drug deal being negotiated.

April 25th, 2008. 9-1-1-1-1-1-1-1-1-1-1-1-1-1.

The 911 call isn't coming from a drug-dinn or street corner.

It's being made from the Advanced Care Triple A Medical Clinic in suburban Los Angeles.

And do we know what are you overdone sir?

I really have no idea.

This victim survives.

But months later, tragedy strikes 21-year-old

Joey Rivero.

His mother, April, says Joey is no drug addict. He's just a student from Arizona State University

looking for a good time. He was a fun kid. He loved to laugh and he was a

jokester. He was just a really joyful kid.

...