California Medical Board member says agency fails to root out negligent doctors: "No question that it costs patients' lives"

Brandi Williams is the kind of person who does her homework. So when the 64-year-old decided to undergo an abdominoplasty, or "tummy tuck," after losing nearly 30 pounds, she made the decision carefully.

Williams settled on Dr. Jason Helliwell, an OB-GYN who also conducts cosmetic procedures, but only after running his medical license number to see if he had any history of misconduct. He appeared to have a clean record.

"It was like he was white as the driven snow," Williams told CBS News chief investigative correspondent Jim Axelrod.