John G. Propp, M.D.M.D.Unclaimed · claim itVascular SurgeryLouisville, CO20+ 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.(800) 991-6117NPI 1558305946View Profile Claim
Gregory D. Ruth, M.D.M.D.Unclaimed · claim itVascular SurgeryLouisville, CO27 years experienceCalculated from a graduation year of 1999, reported in the CMS National Downloadable File.(800) 991-6117NPI 1578505681View Profile Claim
