Elisabeth R. Mahmud, RN, AGNPRN, AGNPUnclaimed · claim itNurse Practitioner — GerontologyCorvallis, OR10+ years experienceRegistered with an NPI since 2016. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(541) 754-1150NPI 1063961373View Profile Claim