Medicare Advantage enrollment has grown to cover more than half of all Medicare beneficiaries — roughly 33 million people as of 2025, according to CMS data — and the 2026 plan year brings a set of changes that affect what enrollees pay, what extra benefits they can access, and how easily they can get care approved. These are not abstract policy shifts. They can directly affect your out-of-pocket spending, your ability to see your current doctors, and whether a procedure your physician recommends gets approved without a fight.
The federally mandated out-of-pocket maximum for Medicare Advantage plans covering in-network services is set at $9,350 in 2026. This is the ceiling — the most you would pay for covered Part A and Part B services within your plan's network before the plan covers 100 percent of those costs for the remainder of the year. But this number is a ceiling, not a floor. Many plans voluntarily set their own limits well below that figure, sometimes as low as $3,000 to $5,000 depending on plan type and region. When you are comparing plans during the Annual Enrollment Period — October 15 through December 7 — or the Medicare Advantage Open Enrollment Period from January 1 through March 31, the out-of-pocket maximum deserves as much attention as the monthly premium. You will find it clearly listed in each plan's Summary of Benefits, which every plan is required to provide.
On premiums, many Medicare Advantage plans in 2026 continue to offer $0 monthly premiums, which sounds appealing but requires careful scrutiny. A $0 premium plan does not mean $0 cost. Plans with no monthly premium often carry higher copayments for specialist visits — sometimes $50 to $75 per visit compared to $10 to $30 on a plan with a modest premium — along with higher cost-sharing for inpatient hospital stays and narrower provider networks. A plan charging $25 to $45 per month may actually cost you less over a full year if it has lower copays, a broader network, and a lower out-of-pocket cap. The math only works in your favor if you estimate your likely utilization: how many specialist visits you expect, whether you take brand-name drugs, and whether you anticipate any procedures or hospitalizations. Running those numbers through the Medicare Plan Finder at Medicare.gov, which allows you to enter your specific prescriptions and doctors, gives you a far more accurate cost comparison than the premium line alone.
Prior authorization has become one of the most contentious issues in Medicare Advantage, and 2026 marks a year of heightened federal enforcement. Prior authorization is the process by which a plan requires your doctor to obtain approval before you can receive certain services, procedures, or medications. CMS finalized rules in 2024 that are being enforced more rigorously in 2026, requiring Medicare Advantage plans to respond to standard prior authorization requests within 7 calendar days and to urgent requests within 72 hours. Plans are also required to provide specific clinical reasons when they deny a request — not a generic denial code. This distinction matters enormously in practice. Vague denials were historically difficult to challenge because neither you nor your doctor knew exactly what clinical standard the plan was applying. With a specific reason in hand, you have a concrete basis for filing an appeal, which you have the right to do within 60 days of receiving a denial notice.
CMS has also required that Medicare Advantage plans publicly report their prior authorization approval and denial rates, broken down by service type. This data is available through CMS transparency reports and allows beneficiaries and advocacy organizations to identify plans with unusually high denial rates for specific services such as skilled nursing facility care, home health visits, or durable medical equipment like wheelchairs and CPAP supplies. If you are managing a chronic condition that requires recurring specialist visits or ongoing equipment, reviewing a plan's prior authorization track record before the Annual Enrollment Period closes on December 7 can prevent significant disruption to your care mid-year. KFF analysis of CMS data has consistently shown that denial rates vary substantially across plans even within the same county, making this comparison worthwhile.
Supplemental benefits — the extras that Original Medicare does not cover — remain a central selling point for Medicare Advantage plans in 2026, but the landscape has become more complicated. CMS has tightened the rules around what qualifies as a supplemental benefit, requiring that benefits have a reasonable expectation of improving or maintaining health or preventing deterioration of a health condition. This has led some plans to scale back or restructure benefits that were previously offered more broadly. Dental coverage is a clear example: some plans offer only preventive dental care such as cleanings and X-rays, while others include comprehensive coverage for crowns, root canals, and dentures with annual maximums ranging from $1,000 to $3,000 or more. Vision benefits range from a basic annual eye exam to allowances of $150 to $300 toward frames or contact lenses. Hearing aid coverage, when offered, may include a per-device allowance of $500 to $2,500 every one to three years depending on the plan.
Over-the-counter allowances — quarterly or monthly credits you can use to purchase approved health items such as pain relievers, vitamins, blood pressure monitors, or incontinence supplies — have been a popular supplemental benefit, but their availability and value have shifted in 2026. Some plans that previously offered $100 to $150 per quarter in OTC credits have reduced those amounts or restricted the eligible product list. Others have maintained or expanded them. The only reliable way to know what a specific plan offers is to read the Evidence of Coverage document, which every plan must provide, or to use the Medicare Plan Finder at Medicare.gov, which allows you to filter plans by supplemental benefits in your ZIP code. Do not rely on a plan's marketing materials alone — the Evidence of Coverage is the legally binding document.
Transportation benefits, meal delivery after a hospital stay, and in-home support services are among the more specialized supplemental benefits that some Medicare Advantage plans continue to offer in 2026, particularly for enrollees with chronic conditions. These fall under what CMS calls Special Supplemental Benefits for the Chronically Ill, or SSBCI, and they are only available to enrollees who meet specific clinical criteria defined by the plan. Qualifying conditions typically include diabetes, heart failure, chronic obstructive pulmonary disease, and similar diagnoses. If you have a qualifying condition, ask any plan you are considering whether you would be eligible for these additional benefits and what the activation process looks like — because they are not automatically applied when you join the plan. You may need to complete a health assessment or work through your plan's care management team to access them.
Network adequacy is another area where CMS has increased scrutiny heading into 2026. Medicare Advantage plans are required to maintain networks that provide timely access to care, with specific time and distance standards for primary care, specialists, and hospitals that vary depending on whether you live in an urban, suburban, or rural area. CMS has been auditing plans more aggressively for network adequacy violations, and some plans have faced corrective action for listing providers who are not actually accepting new patients or who have quietly left the network. Before enrolling in any plan, call your primary care physician, your key specialists, and your preferred hospital directly to confirm they are in-network and accepting new patients under that specific plan — not just listed in the online directory, which can lag behind real-world network changes by weeks or months.
For beneficiaries who are unhappy with their current Medicare Advantage plan, the Annual Enrollment Period from October 15 through December 7 is the primary window to switch plans, with new coverage beginning January 1. The Medicare Advantage Open Enrollment Period, running January 1 through March 31, allows you to switch from one MA plan to another, or to drop Medicare Advantage entirely and return to Original Medicare, one time. If you return to Original Medicare during this window and want to add a Medigap supplemental policy to cover cost-sharing, be aware that you may face medical underwriting in most states — meaning insurers can charge you more or deny coverage based on your health history. However, if you live in one of the states that have enacted a birthday rule, you have a 30-day window around your birthday each year to switch Medigap plans without medical underwriting, regardless of your health status. Those states include California, Idaho, Illinois, Kentucky, Louisiana, Maine, Maryland, Missouri, Nevada, New Jersey, New York, Oklahoma, and Oregon. If you live in one of these states and your current Medigap plan no longer meets your needs, your birthday window may be the most cost-effective time to make a change.
If you need help comparing plans, the State Health Insurance Assistance Program, known as SHIP, offers free, unbiased counseling in every state. SHIP counselors are not insurance agents and earn no commissions — they can walk through the Medicare Plan Finder with you, compare total estimated costs based on your actual prescriptions and doctors, and explain your rights if a claim or prior authorization request is denied. To find your local SHIP office, visit shiphelp.org or call 1-800-MEDICARE (1-800-633-4227). Given the complexity of the 2026 plan landscape — where the difference between two plans in the same ZIP code can amount to thousands of dollars in annual out-of-pocket costs — this kind of personalized, no-cost guidance can be worth far more than any online comparison tool used in isolation.