In October 2018, the National Practitioner Data Bank (NPDB) published the third edition of the NPDB Guidebook.
NPDB publishes monthly “NPDB insights”. I could not send the link to that, but I have attached a copy of the page announcing the new Guidebook here: NPDB Insights.
I am also attaching a link to the Guidebook. https://www.npdb.hrsa.gov/resources/aboutGuidebooks.jsp
You can also obtain all of these by logging on to the NPDB homepage: https://www.npdb.hrsa.gov/