; and ; and (C) by inserting after clause (xiii) the following: (xiv) such contract provides that (I) payments to health care providers specified in section 1902(a)(13)(C) for furnishing primary care services defined in section 1902(jj) during a year or period specified in section 1902(a)(13)(C) are at least equal to the amounts set forth and required by the Secretary by regulation, (II) the entity shall, upon request, provide documentation to the State that is sufficient to enable the State and the Secretary to ensure compliance with subclause (I), and (III) the Secretary shall approve payments described in subclause (I) that are furnished through an agreed-upon capitation, partial capitation, or other value-based payment arrangement if the agreed-upon capitation, partial capitation, or other value-based payment arrangement is based on a reasonable methodology and the entity provides documentation to the State that is sufficient to enable the State and the Secretary to ensure compliance with subclause (I). . (2) Conforming amendment Section 1932(f) of the Social Security Act ( 42 U.S.C. 1396u–2(f) ) is amended by inserting and clause (xiv) of section 1903(m)(2)(A) before the period. (3) Effective date The amendments made by this subsection shall apply with respect to contracts entered into on or after the date of the enactment of this Act. 3. Study (a) In general Not later than the date that is one year and one month after the date of the enactment of this Act, the Secretary of Health and Human Services shall conduct a study— (1) comparing the number of children enrolled in a State plan under title XIX of the Social Security Act ( 42 U.S.C. 1396 et seq. ) (or a waiver of such plan) 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 children so enrolled during the 12-month period beginning on such first day