Medicare Advantage bundles your Medicare into one private plan, usually with extras like dental, vision and drug coverage — and more than half of plans charge $0 monthly premium (you still pay your Part B premium). The best-rated big providers for 2026 are Blue Cross Blue Shield (PPO, 4.5 stars), Cigna and UnitedHealthcare (4.0). But the number that really matters isn’t the premium — it’s the max out-of-pocket (MOOP), which averages about $5,555.
Top-rated providers
| Provider | CMS stars | Avg premium | Max out-of-pocket |
|---|---|---|---|
| Blue Cross Blue Shield | 4.5 | $0 | ~$6,750 |
| Cigna | 4.0 | ~$20 | ~$4,961 |
| UnitedHealthcare | 4.0 | ~$15 | ~$5,659 |
| Humana | 3.5 | ~$27 | ~$6,578 |
Source: MoneyGeek, 2026. BCBS leads for PPO plans, Cigna for HMO, UnitedHealthcare for HMO-POS and Humana for PFFS. Over half of all Medicare Advantage plans are $0 premium; you still pay your Medicare Part B premium separately.
Also worth comparing where they’re offered: Aetna (CVS Health), Kaiser Permanente (consistently among the highest CMS star ratings in its service areas) and Wellcare (often strong on drug coverage). Plans and star ratings are set county by county, so the same insurer can be excellent in one area and unavailable in the next.
Why “$0 premium” can be misleading
Those “zero-dollar” ads leave out two things. First, you still pay your Part B premium no matter what. Second — and this is the big one — a $0 plan can leave you on the hook for a $6,000+ max out-of-pocket if you actually get sick, while a plan charging $20/month might cap that risk at under $5,000. The premium is the headline; the MOOP and the star rating are what actually protect you.
Advantage vs Original Medicare + Medigap
This is the fork in the road that matters most, so here’s the honest trade-off. Medicare Advantage usually costs less upfront, bundles extras, but ties you to a network and requires referrals/prior authorizations on many plans. Original Medicare plus a Medigap (supplement) plan costs more each month but lets you see almost any doctor nationwide with very predictable costs. A detail people miss: if you start on Advantage and later want to switch to Medigap, you can sometimes be medically underwritten — meaning a health condition could make it expensive or hard to get. So the choice you make when you first enroll carries more weight than it looks.
How to choose
Check first
- Are your doctors in the plan’s network?
- Are your exact prescriptions covered?
- What’s the max out-of-pocket (lower is safer)?
- Is it rated 4 stars or higher?
Weigh the trade-off
- Advantage: lower upfront cost, extras, network limits
- Original Medicare + Medigap: more freedom, higher premium
- Match extras (dental, vision) to what you’ll use
- Review your plan every year during open enrollment
Know your enrollment windows
Timing is everything with Medicare, and missing a window can lock you in for a year:
- Annual Enrollment (Oct 15–Dec 7): join, switch or drop a Medicare Advantage or drug plan; changes start Jan 1.
- Medicare Advantage Open Enrollment (Jan 1–Mar 31): if you’re already in an Advantage plan, you get one chance to switch to another or return to Original Medicare.
- Your Initial Enrollment Period is the 7-month window around your 65th birthday — the best time to buy Medigap without medical underwriting.
Real examples
If you’re healthy, on a budget, and rarely travel: a well-rated $0 or low-premium Advantage plan can be a great deal — just pick one with a lower max out-of-pocket so a surprise hospital stay doesn’t wreck you.
If you have chronic conditions and specific specialists: the freedom of Original Medicare plus Medigap is often worth the higher premium — no network fights or referrals when you need care the most.
If you snowbird or split time between two states: Advantage networks are local, so a plan that’s perfect in Florida may cover almost nothing in Michigan. Original Medicare travels with you nationwide, which usually fits this life better.
The bottom line
Don’t chase the $0 premium alone. Compare the max out-of-pocket and star ratings, confirm your doctors and drugs are covered, and lean toward 4+ star plans like Blue Cross Blue Shield or Cigna.
Medicare Advantage ads love the words “zero-dollar premium,” and that framing traps people. $0 doesn’t mean free — you still pay Part B, and a $0 plan can leave you facing a $6,000-plus max out-of-pocket the moment you get seriously ill. So I’d ignore the premium as the headline and look at two numbers instead: the max out-of-pocket (lower is safer) and the star rating (4+ means the plan actually delivers).
Then — and this is the step people skip — I’d confirm my own doctors and my exact prescriptions are covered before signing anything. Blue Cross Blue Shield and Cigna are strong starting points, but honestly, the “best” plan is simply the good-rated one your doctors actually take.
FAQs
What is Medicare Advantage?
Are $0-premium plans really free?
What is MOOP and why does it matter?
Can I switch back to Original Medicare later?
When can I change my plan?
Which Medicare Advantage plan is best?
Sources: MoneyGeek (2026 Medicare Advantage provider and cost analysis); Medicare.gov; CMS Star Ratings (2026).