; and (2) in subparagraph (C), by inserting , nurse practitioner, or physician assistant after physician each place it appears. 103. Improvements to the assignment of beneficiaries under the Medicare shared savings program Section 1899(c)(1) of the Social Security Act ( 42 U.S.C. 1395jjj(c)(1) ) is amended— (1) in subparagraph (A), by striking and at the end; (2) in subparagraph (B), by striking the period at the end and inserting ; and ; and (3) by adding at the end the following new subparagraph: (C) in the case of performance years beginning on or after January 1, 2024, primary care services provided under this title by an ACO professional described in subsection (h)(1)(B). . 104. Expanding the availability of medical nutrition therapy service Medicare program Section 1861(vv)(1) of the Social Security Act ( 42 U.S.C. 1395x(vv)(1) ) is amended by inserting , a nurse practitioner, a clinical nurse specialist, or a physician assistant (as such terms are defined in subsection (aa)(5)) before the period at the end. 105. Preserving access to home infusion therapy (a) Allowing applicable providers To establish home infusion therapy plans Section 1861(iii)(1)(B) of the Social Security Act ( 42 U.S.C. 1395x(iii)(1)(B) ) is amended— (1) by striking a physician (as defined in subsection (r)(1)) and inserting an applicable provider (as defined in paragraph (3)(A)) ; and (2) by striking a physician (as so defined) and inserting an applicable provider (as so defined) . (b) Conforming amendment Section 1834(u)(6) of the Social Security Act ( 42 U.S.C. 1395m(u)(6) ) is amended by striking physician and inserting applicable provider (as defined in section 1861(iii)(3)(A)) . 106. Increasing access to hospice care services (a) In general Section 1814(a)(7)(A) of the Social Security Act ( 42 U.S.C. 1395f(a)(7)(A) ) is amended— (1) in clause (i)— (A) in subclause (I), by striking a nurse practitioner or ; (B) in subclause (II), by inserting or nurse practitioner after physician