James J. Kiffer, PHD CLINICAL PSYCHOLPHD CLINICAL PSYCHOLUnclaimed · claim itPsychologistBarrigada Heights, GU19+ years experienceRegistered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(671) 637-8929NPI 1306028204View Profile Claim