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. 2015 Jun 24;30(Suppl 3):595–601. doi: 10.1007/s11606-015-3380-9

Table 6.

Two-Way Matching on Elements of Contact Information

	AMA vs. NPPES n = 2494	AMA vs. SK&A^a n = 1655	NPPES vs. SK&A^a n = 1821
Information	NPI matching % (N)	NPI matching % (N)	NPI matching % (N)
Last name	98 % (2457)	99 % (1640)	100 % (1819)
First name	100 % (2486)	99 % (1646)	100 % (1815)
Address	33 % (817)	38 % (636)	70 % (1284)
City	58 % (1460)	63 % (1048)	81 % (1481)
State	91 % (2268)	97 % (1602)	97 % (1773)
Zip	44 % (1094)	49 % (816)	77 % (1409)
Specialty	80 % (1992)	82 % (1360)	91 % (1659)

^aSK&A phone-verified database