; (2) comparing the number of health care providers receiving payments for primary care services under the Medicaid program under such title during the 12-month period preceding the first day of the period described in subparagraph (C)(ii) of section 1902(a)(13) of such Act ( 42 U.S.C. 1396a(a)(13) ), as amended by section 2, to the number of health care providers receiving such payments during the 12-month period beginning on such first day