Mateo Guanzon, M.D.M.D.Unclaimed · claim itThoracic Surgery (Cardiothoracic)Dyer, IN21+ years experienceRegistered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(219) 865-0893NPI 1629073366View Profile Claim