Medicare Advantage vs Medicare Supplement: Which Plan Is Right for You?

Once you become eligible for Medicare, you face a critical fork in the road: should you enroll in a Medicare Advantage plan or stick with Original Medicare and add a Medicare Supplement (Medigap) policy? Both paths provide comprehensive healthcare coverage, but they do so in very different ways, and the right choice depends on your health needs, your budget, and how much flexibility you want. Medicare Advantage, also known as Part C, is offered by private insurance companies approved by Medicare. These plans replace Original Medicare entirely and must cover everything Original Medicare covers, plus they frequently include additional benefits like dental exams, vision care, hearing aids, fitness memberships, and prescription drug coverage (Part D). Most Medicare Advantage plans use a network model (HMO or PPO), which means you may need to use specific doctors and hospitals. Premiums are often lower than Medigap, and some plans even have $0 monthly premiums beyond your Part B premium. Medicare Supplement (Medigap) takes the opposite approach. Instead of replacing Original Medicare, Medigap works alongside it to fill the gaps in coverage. When you have a Medigap policy, Original Medicare pays its share of covered costs first, and then your Medigap policy kicks in to cover some or all of the remaining costs, such as copayments, coinsurance, and deductibles. Medigap plans are standardized by the federal government into lettered plans (A, B, C, D, F, G, K, L, M, N), so the benefits of Plan G from one insurer are identical to Plan G from another. The key advantage is provider freedom: you can see any doctor or hospital in the country that accepts Medicare, with no network restrictions and no referrals required.