CMS Changes Medicare Plan Oversight: What Beneficiaries Need to Know

The Centers for Medicare & Medicaid Services is changing how it supervises Medicare Advantage and Medicare Part D plans. The changes affect plan quality ratings, provider directories, supplemental benefits, debit cards, prescription drug coverage, marketing and the information beneficiaries receive when comparing plans.

Most provisions in the Contract Year 2027 Medicare Advantage and Part D final rule apply to coverage beginning January 1, 2027. Marketing rules for 2027 plans generally begin applying when the new marketing season starts on October 1, 2026.

Some of the changes strengthen transparency. Others remove reporting or administrative requirements that CMS considers duplicative or burdensome.

For beneficiaries, the practical message is straightforward:

CMS oversight may improve the information available to you, but it does not eliminate the need to investigate a plan before enrolling.

A plan can follow Medicare’s rules and still be a poor match for your doctors, hospitals, prescriptions or medical needs.

What Does Medicare Plan Oversight Mean?

Private insurance companies administer Medicare Advantage and standalone Part D plans under contracts with Medicare.

CMS does not normally decide whether an individual medical service will be approved. The insurance company administers the plan, processes claims, maintains its provider network, applies prior-authorization requirements and manages its drug formulary.

CMS supervises these companies by establishing rules and reviewing areas such as:

• Access to covered medical care
• Prescription drug coverage
• Prior authorization and appeals
• Marketing practices
• Provider-network adequacy
• Customer service
• Supplemental benefits
• Quality performance
• Plan finances and reporting
• Complaints from beneficiaries

CMS can conduct audits, impose civil money penalties, suspend a plan’s marketing or enrollment, restrict payments and, in severe situations, terminate a plan’s Medicare contract.

That sounds reassuring, but oversight is not the same as a guarantee.

CMS may approve a plan to operate, but that does not mean the plan covers every drug, includes every hospital or provides the lowest cost for every beneficiary.

Provider Directories Should Become Easier to Compare

One of the most useful changes involves Medicare Advantage provider directories.

CMS has finalized a requirement for Medicare Advantage organizations to submit provider-directory information for publication through Medicare’s online plan-comparison system. Plans must generally update that information within 30 days after learning about a change and attest at least annually that the information is accurate.

This could make it easier for beneficiaries to compare provider networks without opening a separate directory on every insurance company’s website.

That is a genuine improvement. Provider directories have long been a source of frustration.

A doctor may appear in an online directory but no longer accept the plan. A medical group may participate while one of its locations does not. A hospital may be listed as participating, but a particular specialist working there may be out of network.

The new requirements should improve transparency, but beneficiaries should still verify coverage directly.

Before enrolling in a Medicare Advantage plan:

1. Search for the doctor through Medicare’s Plan Finder.
2. Check the insurance company’s current provider directory.
3. Call the doctor’s billing office.
4. Provide the exact plan name and contract information.
5. Ask whether the doctor expects to participate during the coming plan year.

Do not simply ask, “Do you take Medicare?”

A doctor may accept Original Medicare but not your particular Medicare Advantage plan.

The better question is:

“Will you be in network with this exact Medicare Advantage plan in 2027?”

More Protection When Providers Leave a Network

CMS says its 2027 policies are intended to protect beneficiaries when healthcare providers leave their Medicare Advantage networks.

A provider’s departure can be disruptive, particularly during cancer treatment, rehabilitation, pregnancy, surgery preparation or treatment for a serious chronic condition.

Depending on the circumstances, plans may be required to provide notices or continuity-of-care protections. But the exact protection available can depend on the reason the provider left, the type of treatment being received and the plan’s rules.

Beneficiaries should not assume they must silently accept an unexpected network disruption.

When an important doctor or facility leaves a network:

• Contact the plan immediately.
• Ask about continuity-of-care rights.
• Request a written explanation.
• Ask whether an in-network exception is available.
• Keep copies of notices and correspondence.
• File an appeal or complaint when appropriate.

A change in a provider network may also create an opportunity to change plans in certain circumstances, but not every network change automatically creates a Special Enrollment Period.

That is why beneficiaries should seek individualized guidance before cancelling coverage.

Greater Transparency for Special Supplemental Benefits

Some Medicare Advantage plans offer Special Supplemental Benefits for the Chronically Ill, commonly called SSBCI.

These benefits can include certain services or items intended to help eligible members manage chronic health conditions. Depending on the plan, examples may include transportation, food-related benefits, home modifications or other nonmedical support.

The advertisement may make the benefit sound simple:

“Get money for groceries.”

The actual eligibility rules may be considerably more complicated.

The beneficiary may need to have a qualifying chronic condition, meet the plan’s written criteria and demonstrate that the benefit has a reasonable expectation of improving or maintaining health or function.

For 2027, CMS is requiring plans to make their plan-developed SSBCI eligibility criteria publicly available.

That should help beneficiaries understand who qualifies before they choose a plan.

This is important because supplemental benefits are frequently highlighted in Medicare Advantage advertising. A person may join a plan expecting a large grocery, utility or flexible-spending benefit, only to discover that the full benefit is not available to every member.

Before enrolling because of an advertised supplemental benefit, ask:

• Who qualifies?
• What medical conditions qualify?
• Is additional approval required?
• How often is eligibility reviewed?
• Which products or services can be purchased?
• Does unused money roll over?
• Can the benefit amount change during the year?
• Which retailers or service providers accept it?

The largest number in an advertisement may represent the maximum theoretical value—not the amount every enrollee receives.

New Rules for Medicare Advantage Debit Cards

Medicare Advantage debit cards have become common.

Plans may use them to deliver over-the-counter allowances, food benefits, transportation assistance, fitness-related benefits or other supplemental services.

CMS is codifying and clarifying how these cards must be administered. Among other requirements, debit cards must be electronically connected to plan-covered items and services through a real-time system that checks whether a purchase is eligible. Cards must also be limited to the specific plan year.

This is intended to improve consistency and program integrity.

For beneficiaries, however, these cards can still be confusing.

A card may decline a product that appears eligible. One version of a product may qualify while another does not. A grocery allowance may be restricted to approved foods or participating stores.

Keep receipts and call the plan when an eligible purchase is rejected.

Most importantly, do not select a health plan solely because its debit card has the highest advertised dollar amount.

The medical network, drug coverage, maximum out-of-pocket limit, hospital copayments and prior-authorization rules can matter far more than a shopping allowance.

A $500 supplemental benefit is not a bargain if the plan exposes you to thousands of dollars in unexpected medical or prescription costs.

CMS Is Changing How Plan Quality Is Measured

Medicare uses a Star Ratings system to score Medicare Advantage and Part D contracts.

Plans may receive ratings from one to five stars. These ratings appear in Medicare’s plan-comparison tools and can influence quality bonus payments to Medicare Advantage organizations.

CMS is changing the measures used in the program and placing greater emphasis on clinical outcomes and patient experience.

Some measures are being removed from future Star Ratings calculations, while CMS is also changing how plan performance and quality improvement are assessed.

A Star Rating can be useful, but it should not make the enrollment decision for you.

The rating generally applies to the insurance contract, not necessarily to your personal experience with one particular plan in one county.

A highly rated plan may still:

• Exclude your doctor
• Charge more for your prescriptions
• Require prior authorization for important services
• Have high hospital copayments
• Offer a limited dental network
• Provide weak out-of-network coverage

A lower-rated plan may happen to cover your medications and doctors more effectively.

Use Star Ratings as one piece of information—not as a substitute for a complete comparison.

CMS Is Also Removing Some Requirements

Not every oversight change adds a new consumer protection.

CMS is eliminating or scaling back certain plan obligations that it considers unnecessary or burdensome.

For example, CMS is rescinding the requirement that Medicare Advantage plans send midyear notices informing members about supplemental benefits they have not used. CMS is also eliminating the requirement that Medicare Advantage quality-improvement programs include activities specifically designed to reduce health disparities.

The removal of the unused-benefit notice deserves attention.

Many members forget that their plan includes dental, vision, transportation, fitness, over-the-counter or other benefits. A midyear reminder could encourage them to use benefits before they expire.

Without that mandatory notice, beneficiaries may need to monitor their benefits more actively.

At the beginning of the year, make a written list of every supplemental benefit included in your plan. Include:

• The benefit amount
• How often it renews
• Eligibility rules
• Participating providers
• Authorization requirements
• The expiration date

Review the list at least every three months.

Insurance companies are very good at remembering the premiums and claims. You may have to remember the benefits.

Prior Authorization Is Becoming More Electronic

Prior authorization remains one of the most controversial areas of Medicare Advantage.

A plan may require approval before covering certain tests, procedures, equipment, rehabilitation services or medications.

CMS has been moving toward a more electronic and standardized prior-authorization system. Under previously finalized federal requirements, affected payers must meet many new technology requirements beginning primarily in 2027.

The goal is to reduce paperwork, exchange information more quickly and make decisions easier to track.

That could help doctors spend less time sending faxes and making repeated telephone calls.

But electronic prior authorization does not mean prior authorization disappears.

A request can still be denied.

The improvement will depend on whether the new technology speeds up legitimate approvals, provides clear reasons for denials and makes appeals easier.

Beneficiaries should ask whether important ongoing treatments require prior authorization before joining a plan.

This is particularly important for:

• Rehabilitation
• Skilled nursing care
• Advanced imaging
• Infusion therapy
• Medical equipment
• Certain surgeries
• Specialty drugs
• Home healthcare

When authorization is denied, request the denial in writing and read the appeal instructions. Many adverse decisions are changed when additional medical information is submitted or the decision is formally appealed.

Part D Oversight and Drug Coverage Are Also Changing

CMS is continuing to implement the redesigned Medicare Part D benefit created by federal law.

The 2027 final rule codifies changes involving the deductible, benefit phases, the annual out-of-pocket threshold, manufacturer discounts, plan payments and other parts of the Part D system.

These changes may strengthen financial protection, but they do not make all prescriptions inexpensive.

Plans still have formularies.

They can place drugs on different cost-sharing tiers, require prior authorization, use step therapy and designate preferred pharmacy networks.

Beneficiaries should compare total yearly drug costs—not merely the plan premium.

Enter every prescription into Medicare’s Plan Finder, including:

• Exact drug name
• Dosage
• Quantity
• Frequency
• Preferred pharmacy

A plan with a $0 premium can still cost more overall than a plan charging a monthly premium.

“Zero premium” does not mean zero cost.

What Beneficiaries Should Do Before 2027

The oversight changes may improve Medicare’s systems, but beneficiaries still need to take an active role.

Read your Annual Notice of Change when it arrives in the fall of 2026. That document explains how your current plan will change on January 1, 2027.

Check:

• Monthly premium
• Medical deductible
• Drug deductible
• Maximum out-of-pocket limit
• Hospital copayments
• Specialist copayments
• Prescription formulary
• Pharmacy network
• Provider network
• Prior-authorization requirements
• Supplemental benefits

Do not assume your current plan will remain unchanged.

Medicare Advantage and Part D plans can change benefits, costs, provider networks and drug coverage every year.

The Annual Enrollment Period runs from October 15 through December 7, with new coverage generally beginning January 1.

Comparing plans does not obligate you to switch. It simply confirms whether your current plan remains competitive.

Better Oversight Does Not Replace Careful Comparison

CMS’s new oversight policies contain meaningful improvements.

Provider information should become easier to access. Eligibility rules for certain chronic-condition benefits should become more transparent. Debit-card administration should become more consistent. Prior-authorization technology should improve. Drug and quality systems will continue to change.

At the same time, some beneficiary notices and quality-program requirements are being removed.

This is not a simple story of CMS becoming either tougher or weaker.

It is a reorganization of oversight.

Some rules are becoming stronger.

Some are becoming more transparent.

Others are being simplified or eliminated.

Beneficiaries should welcome useful oversight—but remain skeptical of advertising and broad promises.

The right Medicare plan is not necessarily the plan with the loudest commercial, the largest debit-card number or the most familiar celebrity spokesperson.

It is the plan that covers your healthcare needs at a cost you can afford.

Compare plans privately. Verify your doctors. Check every medication. Read the evidence of coverage. Ask direct questions.

CMS can supervise the system.

But the final decision still belongs to you.

Medicare plan availability, benefits, provider networks, formularies and costs vary by location and may change each year. This article is for general educational purposes and is not legal or medical advice. Review official plan documents before enrolling.