Medicare Advantage

A private-insurance alternative to original Medicare (Parts A + B), bundling the coverage with extras like prescription drugs, vision, dental, gym memberships, and sometimes meal delivery. MA plans use restricted provider networks; out-of-network costs can be much higher than in-network.

What it means in practice

Medicare Advantage (MA) plans are sold by private insurers (UnitedHealth, Humana, Aetna, Kaiser, BCBS, others) and are paid a per-member capitation by the federal government to deliver Medicare-covered benefits. By federal rule, MA plans must cover everything original Medicare covers — but they're free to structure cost-sharing differently and to add extra benefits (the "ancillary" benefits like dental, vision, hearing aids, fitness, meal delivery, transportation, OTC drug allowance).

The trade-off: MA plans use restricted networks (HMO, PPO, or HMO-POS) and require prior authorization for many services that original Medicare doesn't. About 99% of MA enrollees are in plans that use prior authorization for at least some services. The denial-and-appeal process is the most common pain point, especially for cancer care, advanced imaging, and skilled-nursing rehab. The annual MA hard out-of-pocket maximum is capped at $9,350 in-network for 2026 (and most plans set lower).

The biggest practical decision: "Original Medicare + Medigap + Part D" vs "Medicare Advantage." The first has higher monthly costs (Medigap premium ~$150-$300, Part D premium ~$40-$80) but predictable cost-sharing and the freedom to see any Medicare-accepting provider. The second has lower monthly costs (sometimes $0 premium) but network restrictions and prior-auth friction. For relatively healthy patients with predictable care needs, MA is often cheaper; for patients with serious illness who need specialists and rapid access, Original + Medigap is often cleaner.

Switching from MA back to Original + Medigap is allowed during Annual Enrollment (Oct 15-Dec 7) or the MA Open Enrollment Period (Jan 1-Mar 31). Important: after the initial Medigap-eligibility window at age 65, Medigap underwriting may apply — meaning a Medigap carrier can charge more, exclude pre-existing conditions, or refuse the application entirely. This means switching from MA to Original + Medigap later in life can be expensive or impossible. The age-65 Medigap choice has lifetime consequences.

When you'll hear it

At Medicare enrollment age (65) and during Open Enrollment (Oct 15-Dec 7 each year). About half of Medicare beneficiaries are now in MA plans. Network restrictions are the most common pain point — your parent's preferred specialist may not be in the plan's network.

Is this the same as…?

Terms families frequently confuse with medicare advantage.

Related terms

• Medicare Part A — The federal program that covers hospital stays, skilled nursing facility (SNF) stays after qualifying hospitalizations, hospice, and some home health care for people 65+ (and some younger people with disabilities).
• Medicare Part B — Covers physician services, outpatient care, durable medical equipment, and most preventive services.
• Medicare Part D — Prescription drug coverage.
• Medigap — Private supplemental insurance designed to cover the deductibles and coinsurance that original Medicare (Parts A + B) doesn't.
• Prior authorization — A requirement from the insurance company that a doctor obtain approval before prescribing certain medications, ordering certain tests, or providing certain treatments.
• Out-of-pocket maximum — The maximum amount you pay out of pocket in a plan year before insurance covers 100% of in-network care.
• Formulary — The list of prescription drugs an insurance plan covers, usually organized into tiers (Tier 1 generic = cheapest, higher tiers = brand-name + specialty = most expensive).

See also: all glossary terms · conditions by name · step-by-step playbooks