William R. Trahan, D.M.D, M.S.DD.M.D, M.S.DUnclaimed · claim itProsthodonticsSaint Charles, IL14+ years experienceRegistered with an NPI since 2012. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(630) 377-4677NPI 1881949923View Profile Claim