Siobain M. Horan, M.D.M.D.Unclaimed · claim itThoracic Surgery (Cardiothoracic)North Las Vegas, NV19+ 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.(702) 791-9000NPI 1821200312View Profile Claim