This includes deductibles, coinsurance and copayments of Part A and Part B. These Supplement plans are offered by private insurance companies. There are a variety of plans to choose from (Letters A-N), but each lettered plan must include the same standard benefits, regardless of insurance company. Although insurance companies are required to offer the same basic benefits for each lettered plan, they do have the ability to charge different premiums. Supplement plans do not have to cover vision, dental, long-term care, or hearing aids. Our agents work with a variety of Supplement plans. Call us to discuss your options.