Medigap vs. Medicare Advantage in Maryland: 2026 Guide

Last reviewed August 17, 2026. Medigap and Medicare Advantage are two different ways to manage costs and coverage after you have Medicare Part A and Part B. Medigap works with Original Medicare and can help pay certain deductibles, copayments, and coinsurance. Medicare Advantage is a private-plan alternative for receiving Part A and Part B benefits, often with a provider network and usually with Part D drug coverage included.

The better fit depends on your enrollment rights, budget, doctors, prescriptions, travel, and the plans available where you live. You cannot use Medigap and Medicare Advantage together. Before changing coverage, verify current benefits, premiums, networks, formularies, and effective dates in official plan documents.

Medigap and Medicare Advantage: the short comparison

Medicare’s official Original Medicare and Medicare Advantage comparison is the best starting point for checking these structural differences.

What is Medigap?

Medigap, also called Medicare Supplement Insurance, is private insurance that works with Original Medicare. It can help pay your share of certain Medicare-covered Part A and Part B costs. You generally need both Part A and Part B before you can buy a policy.

Medigap policies are standardized by letter in most states. A Plan G, for example, has the same standardized medical benefits regardless of the company selling it, although premiums, discounts, customer service, rating methods, and availability can differ. The Medicare Medigap basics page and the Maryland Insurance Administration’s current Medicare Supplement information explain the available plan designs.

Medigap is not a drug plan. Policies sold after 2005 do not include prescription drug coverage, so someone choosing Original Medicare and Medigap may also need a separate Part D plan. Medigap also does not replace Part B: you must keep paying the Part B premium, plus the Medigap premium.

Original Medicare generally lets you use any doctor or hospital in the United States that accepts Medicare. That broader provider access can matter to people who travel, spend part of the year in another state, or see specialists outside Maryland. It is still important to ask whether a provider accepts Medicare assignment and to understand what the chosen Medigap letter covers.

What is Medicare Advantage?

Medicare Advantage, also called Part C, is another way to receive Medicare Part A and Part B benefits through a Medicare-approved private company. You must have Part A and Part B and live in the plan’s service area to join an available plan.

Plans may be HMOs, PPOs, Special Needs Plans, or other Medicare-approved types. Non-emergency care may require network providers, referrals, or prior authorization. Some plans allow certain out-of-network care at a higher cost, while others generally do not. Never assume a physician, hospital, pharmacy, or facility participates because it appeared in an old directory or accepted the plan last year.

Most Medicare Advantage plans include Part D drug coverage, but each plan has its own formulary, pharmacy network, utilization rules, and cost sharing. Plans may also offer benefits that Original Medicare does not cover. Those benefits can change, have limits, or require specific providers, so evaluate them after the core medical and prescription coverage.

Medicare Advantage plans have a yearly out-of-pocket limit for covered Part A and Part B services. The limit and the costs that count toward it depend on the plan. Premiums, deductibles, copayments, coinsurance, networks, drug coverage, and benefits can change each year.

Which costs should you compare?

Do not compare only the monthly premium. A useful estimate includes predictable premiums and the costs you might pay when using care.

Original Medicare with Medigap and Part D

Review:

• the Medicare Part B premium and any income-related adjustment;
• the Medigap premium and how the company prices the policy;
• the costs the selected Medigap letter does and does not cover;
• a separate Part D premium, deductible, copayments, coinsurance, and formulary rules;
• pharmacy network and mail-order differences; and
• possible premium increases over time.

The Maryland Insurance Administration publishes a Medicare Supplement rate guide. Its current edition is dated July 1, 2026, but rates and participating insurers can change. Use the guide for comparison—not as a quote or promise—and request current policy-specific documents before applying.

Medicare Advantage

Review:

• the Part B premium, which you generally continue to pay;
• any additional plan premium;
• medical and drug deductibles;
• copayments and coinsurance for primary care, specialists, hospital care, outpatient services, durable medical equipment, and other expected care;
• the yearly in-network and, when applicable, combined out-of-network limit for covered Part A and Part B services;
• prescription costs at preferred and non-preferred pharmacies; and
• the rules and limits for any extra benefits.

A plan with a $0 additional premium is not free coverage. You still pay the Part B premium and may have other costs when you receive care. Medicare’s 2026 cost overview explains which amounts vary by plan.

How should Carroll County residents check doctors and prescriptions?

Plan availability and networks are local. A Medicare Advantage plan offered in one Maryland county may not be offered in another, and a provider’s participation can differ by plan contract.

Use this three-part check before enrolling:

1. Search the current plan in Medicare Plan Compare using your Carroll County ZIP code, prescriptions, preferred pharmacies, and expected care.
2. Check the plan’s current provider directory, Evidence of Coverage, Summary of Benefits, formulary, and pharmacy directory.
3. Contact the doctor, hospital, facility, and pharmacy directly, naming the exact plan—not just the insurance company—and ask whether participation is expected for the coverage year.

Keep confirmation notes with the date, contact method, and person or department that provided the answer. Directories can change, and neither an agent nor a provider can guarantee future network participation. Recheck before planned care and during each annual review.

With Original Medicare and Medigap, ask whether the provider accepts Medicare and whether it accepts assignment. For Part D, enter every prescription accurately and compare the plan’s formulary, tier, restrictions, pharmacy status, and estimated annual cost.

When can you enroll in Medigap?

The federal Medigap Open Enrollment Period is a one-time six-month period. It starts the first month you have Medicare Part B and are 65 or older. During that period, you can buy any Medigap policy sold in your state without the company denying you or charging more because of health problems.

After that period, a company may use medical underwriting, charge more, or decline an application unless a federal or state guaranteed-issue right applies. Medicare’s Medigap enrollment guidance explains the federal protections. Do not cancel existing coverage until you have written confirmation of the new policy, premium, and effective date.

Maryland’s Medicare Supplement birthday rule

Maryland gives qualifying Medicare Supplement policyholders an additional annual opportunity to switch. The state’s Medicare birthday rule applies during the policyholder’s birthday and the following 30 days. It allows a switch without underwriting to a Maryland-issued Medicare Supplement policy with equal or lesser benefits, subject to the state’s comparison rules.

This is not an unrestricted annual chance to buy any policy. The policy being replaced, proposed plan, application date, and Maryland rules all matter. Review the insurer notice and confirm eligibility before ending the current policy.

New Maryland guaranteed-issue rights effective July 1, 2026

The Maryland Insurance Administration says state law added two Medigap guaranteed-issue situations beginning July 1, 2026:

• Certain people who lose Medicaid after having Medicaid and Medicare Part B at the same time, and remaining on Medicaid for at least six months after Part B began, may apply within the state’s stated 63-day window.
• Certain people who became eligible for Medicare before January 1, 2020 and have a qualifying federal Special Enrollment Period may apply for available policies within 63 days after the qualifying event.

The conditions and proof requirements are specific. Read the state’s new Medicare Supplement enrollment-rights advisory and contact the Maryland Insurance Administration if you are relying on one of these protections.

When can you join or change Medicare Advantage?

Medicare Advantage enrollment follows Medicare’s plan enrollment periods, not the Medigap birthday rule.

• Initial Enrollment Period: When first eligible, you may join a plan after meeting Medicare’s requirements.
• Medicare Open Enrollment: October 15 through December 7 each year. You may join, drop, or switch a Medicare Advantage plan, with changes generally effective January 1 if the request is received by December 7.
• Medicare Advantage Open Enrollment: January 1 through March 31 for people already in a Medicare Advantage plan. You may make one change to another Medicare Advantage plan or return to Original Medicare and join a Part D plan.
• Special Enrollment Periods: Certain events, such as moving or losing qualifying coverage, may create another opportunity to change plans.

Check Medicare’s official plan enrollment-period guide for the dates and actions that apply to your situation.

Returning to Original Medicare does not automatically guarantee that you can buy any Medigap policy. Before leaving Medicare Advantage, confirm whether you have a Medigap trial right, another guaranteed-issue right, or an underwriting path. Also confirm Part D timing so you do not unintentionally go without creditable drug coverage.

A seven-step decision process

1. Confirm your enrollment window. Identify the rule that lets you join or change coverage and the deadline for the application.
2. List your must-keep providers. Include physicians, hospitals, outpatient facilities, pharmacies, and medical-equipment suppliers.
3. Enter every prescription. Record the exact drug name, dose, quantity, frequency, and preferred pharmacy.
4. Estimate total annual cost. Compare premiums with expected deductibles, copayments, coinsurance, and a higher-use scenario.
5. Review access rules. Check networks, referrals, prior authorization, service areas, and travel needs.
6. Read the controlling documents. Use the Evidence of Coverage, Summary of Benefits, Annual Notice of Change, formulary, provider directory, and Medigap outline of coverage as applicable.
7. Confirm the effective date before canceling anything. Keep written enrollment confirmation and do not assume an application means coverage is active.

If you want more background before comparing, start with Medicare 101 for 2026. Carroll County residents can also review Medicare guidance in Westminster and Kayla Pugh’s Medicare services.

Where can Maryland residents get help?

Maryland’s State Health Insurance Assistance Program provides free, confidential Medicare counseling. The Maryland Department of Aging SHIP page lists local offices and currently gives Carroll County’s number as 410-386-3800.

The Maryland Insurance Administration can explain state insurance protections and accept insurance complaints. Medicare.gov and 1-800-MEDICARE provide official federal program information.

Kayla Pugh Health Insurance & Medicare can help you organize your doctors, prescriptions, budget, and timing and compare available options. That guidance is general education, not a guarantee of eligibility, price, acceptance, benefits, network participation, or effective date. Use the contact page to request a review, and do not send a Medicare number, Social Security number, medical record, or other sensitive information through an unexpected or unsecured message.

Frequently asked questions