What will the NSPM examination cover? Kathryn Berry March 28, 2022 15:16 Updated Refer to the NSPM Content Outline Related articles How much does the NSPM subspecialty credential cost? What are the eligibility criteria for the NSPM credential? How long is the NSPM certification examination? When does the NSPM certification need to be renewed? What is nonsurgical pain management (NSPM)?