Although small, a survey of provider organizations, insurers and transactions processing vendors shows the industry is unprepared for the May 23 compliance date for the National Provider Identifier. The NPI rule requires that all providers and provider organizations that are HIPAA covered entities obtain a standard identifier to be used for billing and claims processing. Healthcare IT Transition Group, a consulting firm, put the survey together quickly after hearing many stories that complying with the NPI was “fraught with systemic flaws.”