MCOs are responsible and can be held liable for exposing an injured subscriber to an unqualified provider by failing to conduct a proper credentialing review.
They also undertake the risk that subscribers can look to collect damages when the subscriber is injured due to the malpractice of a provider deemed later to be unqualified. An MCO that exercises reasonable care in credentialing and monitoring its providers reduces its risk of liability of a malpractice suit by one if its members.