Which of the following sources is NOT used for verification of board certification?

The correct choice identifies "local hospital network policies" as a source not typically used for verifying board certification. Board certification verification primarily relies on established entities that specialize in credentialing standards.

The American Board of Medical Specialties (ABMS) and specialty boards maintain official records and databases that confirm a physician's board certification status. These are authoritative sources that provide validation based on recognized procedures and criteria.

Similarly, state licensing boards also play an essential role, as they regulate medical professionals within their jurisdiction and may confirm aspects of certification as part of their licensing verification process.

In contrast, local hospital network policies are specific to the individual institution and can vary widely. They might have their own requirements for credentialing healthcare providers, but they do not serve as a primary source for the actual verification of board certification like ABMS or specialty boards do. Thus, while these policies may support broader credentialing efforts, they do not directly serve as a standardized verification source for board certification.