Frederic Kalenscher, M.D., F.A.A.P.M.D.,F.A.A.P.Unclaimed · claim itPediatrics — Adolescent MedicineMassapequa, NY20+ 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.(516) 798-3090NPI 1851341127View Profile Claim