Keith Hallaian, D.M.D., M.D.D.M.D., M.D.Unclaimed · claim itDentistrySmithtown, NY19+ 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.(631) 265-6533NPI 1366586208View Profile Claim