Mary B. Sheffield, MS, RDN, LDMS, RDN, LDUnclaimed · claim itRegistered Dietitian /…Iuka, MS13+ years experienceRegistered with an NPI since 2013. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.(662) 279-0984NPI 1538580386View Profile Claim