Medicare Advantage Covers Most Seniors Now. Can It Be Trusted to Serve Them Well?

For a 78-year-old managing diabetes and a bad hip, the difference between good and bad health coverage isn't abstract. It's whether a needed scan gets approved in time. It's whether a trusted specialist is actually in network. It's whether a confusing mailer from an insurance agent turns into a plan that doesn't fit her needs at all.

That's the human stakes underneath a policy debate that can otherwise sound like inside baseball. When Medicare Advantage launched in 1997, it promised something Original Medicare didn't offer: coordinated care, prescription coverage bundled in, and a cap on how much a senior could be forced to pay out of pocket. Today, 54% of seniors have voted with their enrollment, choosing MA over the traditional program, according to data from KFF. That's a remarkable vote of confidence.

But popularity isn't the same as perfection. Underneath the growth numbers sits a program strained by financial engineering from some players and a gap between how policy is written and how care actually gets delivered. The next chapter of Medicare Advantage needs to close that gap, aligning incentives so seniors get reliable, affordable care no matter what a given insurer's market strategy looks like.

The Centers for Medicare & Medicaid Services took some real steps forward in its 2027 final rule, particularly around payment integrity and quality measurement. Those moves matter. But they're a start, not a finish line.

Where the Fixes Need to Happen

Supplemental benefits are one of MA's signature draws: dental coverage, transportation, even meal delivery for people managing chronic illness. These extras sound like small conveniences, but for someone recovering from surgery with no car and a fridge full of expired food, a delivered meal can be the difference between healing and a hospital readmission. CMS has made these benefits more transparent, but policymakers should go further, allowing more flexibility in structuring Special Supplemental Benefits for the Chronically Ill and tying them to low-income subsidy status so the help reaches the people who need it most. Releasing public data on which benefits actually improve outcomes would let researchers, providers, and families make better-informed choices.

Payment integrity is another area with real momentum. For 2027, CMS excluded so-called "unlinked chart review" records, essentially diagnosis codes added after the fact without a corresponding visit, from risk score calculations. Think of it like a car insurer basing your premium only on accidents that actually happened, not ones a claims adjuster speculated might have. It's a meaningful step. The next one should require that diagnoses used for risk adjustment reflect real clinical encounters, whether in person or via telehealth, rather than retrospective paperwork. A condition should drive the care a patient receives before it drives what an insurer gets paid. An even bolder option, proposed by policy researchers Abe Sutton and Gabriel Drapos, would shift risk scoring away from broad population averages and toward individualized scores, improving both fairness and accuracy.

Prior authorization, the process where insurers require advance approval before covering certain treatments, remains one of the most common friction points in American healthcare. Nobody disputes that some oversight prevents unnecessary or unsafe procedures. But the current system often slows down care that everyone already agrees is appropriate. CMS should expand "gold carding," a practice where low-risk services from high-performing providers get automatic approval, skipping the review altogether. The numbers show this isn't wishful thinking: large MA plans report denial rates ranging from roughly 4% to nearly 13%, according to KFF, and plans with strong provider relationships already operate at half the lowest end of that range.

Access is measured too often by whether a contract exists on paper, not by whether a senior can actually walk into an office and get seen. In many markets, dominant hospital systems simply refuse to contract with smaller, high-performing MA plans, particularly in rural or consolidated regions. That leaves seniors choosing between plans that look identical on a brochure but differ enormously in what care they can actually access. Congress could fix this by requiring hospitals that accept Original Medicare to also accept MA plans at Medicare rates, unless a plan is under formal sanction. Call it hospital parity: a rule that lets seniors choose coverage based on value rather than being boxed out by network exclusions they never agreed to.

Quality measurement has improved too, with CMS trimming low-value administrative metrics from its Star Ratings system in favor of outcomes and patient experience. Still, the benchmarks used to score plans remain murky, and CMS should adopt clearer, more stable standards that reward sustained improvement rather than punishing plans for statistical noise. Meanwhile, the information pipeline between hospitals, doctors, and insurers remains slow and fragmented. Plans often learn about a senior's hospitalization only after the fact, when the chance to intervene early has already passed. Faster data sharing, through better technical standards and electronic prior authorization, would let care teams act before a crisis rather than react after one.

Dual-eligible seniors, those qualifying for both Medicare and Medicaid, face their own version of this access problem. Some states require common ownership between MA plans and Medicaid managed care organizations, a policy known as Exclusively Aligned Enrollment. In practice, this can herd vulnerable beneficiaries into plans with narrower networks and less experience serving older populations, simply because of corporate structure rather than quality. Coordinated care and consumer choice shouldn't be a tradeoff. Policymakers can preserve integration while still letting high-performing plans compete for these members.

Marketing abuse rounds out the list of unfinished business. CMS's 2027 rules maintain protections against misleading pitches while giving plans more room to communicate with beneficiaries, but enforcement is where the real test lies. Agents and third-party marketing firms engaging in deceptive enrollment tactics erode trust in the entire system. Greater transparency around agent compensation, tougher oversight, and real consequences, including barring agents fired by one plan from working for any affiliated plan, would go a long way toward protecting seniors from confusion dressed up as choice.

Why It Matters

Medicare Advantage has genuinely changed how millions of older Americans experience healthcare, offering coordination, extra benefits, and financial protection that Original Medicare never provided. CMS's recent rule changes represent real progress, not window dressing. But progress isn't the same as arrival. What comes next should reinforce the parts of the program that work and correct the parts that don't, so Medicare Advantage remains something seniors can trust rather than merely something they've defaulted into.