in the case of a type of provider and supplier or item or service covered under Medicare for America but not otherwise covered under title XVIII, shall provide for rates that ensure adequate access to care. (2) Exceptions For purposes of this section, in applying paragraph (1) the Secretary shall ensure that rates to hospitals for inpatient services or outpatient services furnished under Medicare for America are at least 110 percent of such rates on average or in the aggregate for furnishing such inpatient or outpatient services otherwise applied under title XVIII, except that for hospitals serving underserved areas as specified by the Secretary, such rates are increased as necessary to ensure adequate access to care. (3) Application In applying rates under title XVIII for purposes of this part, the following shall apply: (A) The Secretary shall provide for site-neutral payments for items and services furnished in an outpatient hospital and physician office, the rate of payment for such service shall be the same. (B) The Secretary shall increase the average relative value of primary care and other mental and behavioral health and cognitive services by not less than 20 percent in order to ensure adequate access to inpatient and outpatient care. (C) As a condition of participation in the program, participating providers shall accept Medicare for America rates paid by employer-sponsored insurance plans and Medicare Advantage plans. (c) Participating providers (1) In general A health care provider that is a participating provider of services or supplier under the Medicare program under title XVIII on the date of enactment of this title shall remain a participating provider for Medicare for America. (2) Additional providers The Secretary shall establish a process to allow health care providers not described in paragraph (1) to become participating providers for Medicare for America. (d) Prescription drugs (1) In general Any payment rate under this part for a prescription drug shall be at a rate negotiated by the