Robert S. Semco, DMD, MS, D.ABDSMDMD, MS, D.ABDSMUnclaimed · claim itOrthodonticsMiddletown, RI20+ years experienceRegistered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(401) 848-5252NPI 1962426866View Profile Claim