Manuel A. Diaz, M.D.M.D.Unclaimed · claim itAddiction Medicine (Neurology/Ps…Guaynabo, PR19+ 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.(787) 531-6840NPI 1851420004View Profile Claim