If you, or someone you know, are having difficulty paying for prescriptions or Medicare Part B, trained MMAP Counselors are available to walk you through the application process step by step. By calling 1-800-803-7174, individuals will be routed to their local MMAP office. An additional service MMAP Counselors can offer is to explain the available Medicare Part D Prescription plans so that the consumer can make an educated decision on which plan will work best for them.