Which actions by a company offering Medicare Plan D coverage are NOT permitted?

The action that prohibits limiting the choice of pharmacies to only one community chain is aligned with the regulations governing Medicare Plan D. The purpose of Medicare Part D is to ensure that beneficiaries have access to a wide range of pharmacies to fill their prescriptions, therefore maintaining a competitive market and promoting accessibility. Restricting to a single pharmacy chain could jeopardize this accessibility, which is contrary to Medicare guidelines that encourage options for beneficiaries to ensure they can receive their medications in a manner that is most convenient for them.

Options that involve increasing drug prices without notice, restricting coverage to certain medications, or implementing mandatory generic substitution policies may have their own regulations or guidelines but do not necessarily contradict the overall intent of providing beneficiaries with choices and access to care as directly as the limitation of pharmacy options does. Each of these actions may be contingent upon specific contractual agreements or plan structures, but limiting pharmacy choice directly undermines the intent of Medicare's design for accessibility and choice.