; and (II) the period that ends 24 months after the date on which the practice’s agreement period for the demonstration project begins, as determined by the Secretary. (C) Amount of payment The Secretary shall, in consultation with oncologists who furnish oncology services for which payment may be made under part B in a manner determined by the Secretary, determine the amount of the care coordination management fee described in subparagraph (A). (2) Performance incentive payments (A) In general Subject to subparagraphs (C) and (E), the Secretary shall, in addition to any other payments made by the Secretary under this title to a participating oncology practice, pay a performance incentive payment to each such practice for each year of the demonstration project described in subparagraph (B). (B) Timing of payments The performance incentive payment described in subparagraph (A) shall be paid to a participating oncology practice as soon as practicable following the end of the third, fourth, and fifth years of the demonstration project. (C) Source of payments Performance incentive payments made to participating oncology practices under subparagraph (A) for each of the years of the demonstration project described in subparagraph (B) shall be paid from the aggregate pool available for making payments for each such year determined under subparagraph (D), as available for each such year. (D) Aggregate pool available for making payments With respect to each of the years of the demonstration project described in subparagraph (B), the aggregate pool available for making performance incentive payments for each such year shall be determined by— (i) estimating the amount by which the aggregate expenditures that would have been expended for the year under parts A and B for items and services furnished to individuals attributed to participating oncology practices if the demonstration project had not been implemented exceeds such aggregate expenditures for such individuals for such year of the demonstration project