Marsha S. Kofman, RDH, CPHDHRDH, CPHDHUnclaimed · claim itDental HygienistMerrimack, NH4+ years experienceRegistered with an NPI since 2022. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(603) 930-2709NPI 1265168033View Profile Claim