; and (G) performance standards, including organization, facilities, structure of services, efficiency of operation, and outcome in palliation, improvement of health, stabilization, cure, or rehabilitation. (3) Transition in application If the Secretary provides for additional requirements for providers under this subsection, any such additional requirement shall be implemented in a manner that provides for a reasonable period during which a previously qualified provider is permitted to meet such an additional requirement. (4) Ability to provide services With respect to any entity or provider certified to provide items and services described in section 201(a)(7), the Secretary may not prohibit such entity or provider from participating for reasons other than such entity’s or provider’s ability to provide such items and services. (d) Federal providers Any provider qualified to provide health care items and services through the Department of Veterans Affairs, the Indian Health Service, or the uniformed services (with respect to the direct care component of the TRICARE Program) is a qualifying provider under this section with respect to any individual who qualifies for such items and services under applicable Federal law. 303. Use of private contracts (a) In general This section shall apply beginning 2 years after the date of the enactment of this Act. (b) Participating providers (1) Private contracts for covered items and services for eligible individuals An institutional or individual provider with an agreement in effect under section 301 may not bill or enter into any private contract with any individual eligible for benefits under the Act for any item or service that is a benefit under this Act. (2) Private contracts for noncovered items and services for eligible individuals An institutional or individual provider with an agreement in effect under section 301 may bill or enter into a private contract with an individual eligible for benefits under the Act for any item or service that is not a benefit under this