; (B) shall meet such standards as determined appropriate by the Secretary in order to ensure the accessibility and usability of such charges and prices; and (C) shall be updated as determined appropriate by the Secretary, in consultation with stakeholders. (4) Monitoring compliance The Secretary shall, through notice and comment rulemaking and in consultation with the Inspector General of the Department of Health and Human Services, establish a process to monitor compliance with this subsection. (5) Specification of services Not later than January 1, 2025, the Secretary shall publish a list of at least 50 imaging services that the Secretary determines are shoppable (or all such services, if the Secretary determines that fewer than 50 such services are shoppable) between providers of services and suppliers of such services. The Secretary shall update such list as determined appropriate by the Secretary. (6) Enforcement (A) In general In the case that the Secretary determines that a provider of services or supplier is not in compliance with paragraph (1)— (i) not later than 30 days after such determination, the Secretary shall notify such provider or supplier of such determination; (ii) upon request of the Secretary, such provider or supplier shall submit to the Secretary, not later than 45 days after the date of such request, a corrective action plan to comply with such paragraph