Mary B. Lansing, M.D.M.D.Unclaimed · claim itOphthalmology — Retina SpecialistLouisville, CO21+ 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.(303) 666-1800NPI 1528059573View Profile Claim