Entities such as employers with group health plans that provide prescription drug coverage to individuals that are eligible for Medicare Part D have two major disclosure requirements that they must meet at least annually:

• Provide annual written notice to all Medicare eligible individuals (employees, spouses, dependents, retirees, COBRA participants, etc.) who are covered under the prescription drug plan.
• Disclose to the Centers for Medicare and Medicaid Services (CMS) whether the coverage is "creditable prescription drug coverage."