Please Note: Issuance of an NPI does not ensure or validate that the Health Care Provider is Licensed or Credentialed. For more information please refer to NPI: What You Need to Know The NPI Registry Public Search is a free directory of all active National Provider Identifier (NPI) records. Healthcare providers acquire their unique 10-digit NPIs to identify themselves in a standard way ...NPI Registry‧NPPES‧API‧Help‧Results: 1 - 100‧Demo.