Richard Davidson, D.M.D., M.S.D.M.D.,M.S.Unclaimed · claim itPeriodonticsClayton, MO19+ 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.(314) 721-4860NPI 1174732416View Profile Claim