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Aetna Medicare Signature Plus (PPO) (H5521-645) in 2027

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PPO: about this plan type · Legal name: AETNA LIFE INSURANCE COMPANY

Offered again in 10 of 17 counties. Not offered in 7. Check your county below.

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Offered Againin 2027
10
of 17 countiesin 2026
Not Offeredin 2027
7
of 17 countiesin 2026
People inThis Plan
~1,600
CMS enrollment,October 2026

Not offered: CMS's 2027 plan list and plan crosswalk show the plan isn't offered in the county (for drug plans, the state) in 2027 and its members aren't moved to another plan there. Members need to pick a new plan, unless their plan's letter offers another option. If they do nothing, Medicare Advantage and Cost plan members will have Original Medicare. Members of any plan that covered drugs will have no Medicare drug coverage, unless they get Extra Help (outside U.S. territories, Medicare then puts them in a drug plan). Everyone in these plans keeps Medicare.

Louisiana

See the 17 counties in LouisianaHide the counties
Where H5521-645 is offered in Louisiana, 2026 and 2027
CountyWhat's HappeningPeople in Plan
Acadia Parish: what this means for you
All plans in Acadia Parish
Offered in 2027~180
Ascension Parish: what this means for you
All plans in Ascension Parish
Offered in 2027~10
Assumption Parish: what this means for you
All plans in Assumption Parish
Offered in 202710 or fewer
Calcasieu Parish: what this means for you
All plans in Calcasieu Parish
Offered in 2027~70
Caldwell Parish: what this means for you
All plans in Caldwell Parish
Not offered: left this county~40
Concordia Parish: what this means for you
All plans in Concordia Parish
Not offered: left this county~50
East Baton Rouge Parish: what this means for you
All plans in East Baton Rouge Parish
Offered in 2027~50
Iberville Parish: what this means for you
All plans in Iberville Parish
Not offered: left this county10 or fewer
Lafayette Parish: what this means for you
All plans in Lafayette Parish
Offered in 2027~540
Livingston Parish: what this means for you
All plans in Livingston Parish
Offered in 2027~20
Pointe Coupee Parish: what this means for you
All plans in Pointe Coupee Parish
Not offered: left this county10 or fewer
St. James Parish: what this means for you
All plans in St. James Parish
Not offered: left this county10 or fewer
St. Martin Parish: what this means for you
All plans in St. Martin Parish
Not offered: left this county~270
St. Tammany Parish: what this means for you
All plans in St. Tammany Parish
Offered in 2027~250
Tangipahoa Parish: what this means for you
All plans in Tangipahoa Parish
Offered in 2027~40
Vermilion Parish: what this means for you
All plans in Vermilion Parish
Offered in 2027~100
West Baton Rouge Parish: what this means for you
All plans in West Baton Rouge Parish
Not offered: left this county10 or fewer

Costs and Star Rating

Costs for H5521-645, 2026 and 2027
What20262027
Monthly premium (without Extra Help)$0 a month$0 a month
Maximum you pay for covered medical care$7,900 (in-network)$7,150 (in-network)
Drug deductible$615$600
Overall star rating (from CMS)4.5 out of 5 stars4 out of 5 stars

PPO plans also have a limit for in- and out-of-network care combined. See Medicare Plan Finder.

CMS rates contracts, so plans under one contract share its rating. For costs with Extra Help, use the lookup.

What Happens Next

If this plan is not offered in your county in 2027, you can pick a new plan from October 15 to December 7, 2026. If your plan is ending, you also have until February 28, 2027. Check your county to see what happens if you do nothing.

These numbers come from CMS's plan files. If you're in this plan, confirm with your Annual Notice of Change or the letter from your plan.

Source: CMS CY2027 Landscape, data as of October 18, 2026 (release 202610). Enrollment: CMS Monthly Enrollment by Contract/Plan/State/County, October 2026. Plan moves: CMS 2027 Plan Crosswalk, file dated October 1, 2026. People counts add up the counties where this plan is offered. They leave out members who live outside that area. See how we get our numbers.