Aetna Medicare Signature Extra (PPO) in Oakland County, Michigan — 2026 plan details
Last updated Jul 18, 2026
Reviewed by Jason Burns, Editorial Steward
Published by Senior Direct Answers · Licensed under Citation License 1.0
Aetna Medicare Signature Extra (PPO) (H5521-404) is a $0-premium Medicare Advantage PPO from CVS Health Corporation available in Oakland County, Michigan in 2026, with a 4.5-star overall rating, a $4,700 in-network out-of-pocket maximum, and a $615 annual Part D drug deductible.
Plan facts (CMS CY2026 Landscape file)
| Organization | CVS Health Corporation |
|---|---|
| Plan name | Aetna Medicare Signature Extra (PPO) |
| Contract ID | H5521 |
| Plan ID | 404 |
| Segment ID | 0 |
| Contract year | 2026 |
| Contract category | MA-PD |
| Plan type | PPO |
| SNP | No |
| Monthly consolidated premium | $0.00 |
| Part C premium | $0.00 |
| Part D basic premium | $0.00 |
| Part D total premium | $0.00 |
| Annual Part D deductible | $615.00 |
| Maximum out-of-pocket (in-network) | $4700.00 |
| Overall star rating | 4.5 |
How this plan is structured
- $0 consolidated premium. A $0 or near-$0 consolidated premium does not remove the Part B premium — the standard 2026 Part B premium is $202.90 per month and still applies. See the 2026 Medicare Part B premium.
- PPO plan type. Plan-type rules determine in-network use and referrals. See how Medicare Advantage HMO and PPO plans differ.
- $4,700 in-network out-of-pocket maximum. The MOOP is the annual cap on what a member pays in-network for covered Part A and Part B services. See how the Medicare Advantage MOOP works.
- Service area = Oakland County. Medicare Advantage plans are sold by service area; moving out of the plan's service area triggers a Special Enrollment Period to switch plans. See how moving changes your Medicare options.
How it compares in Oakland County
The CMS CY2026 Landscape file lists 103 Medicare Advantage plans in Oakland County, Michigan, of which 6 carry a 5.0-star overall rating and 57 have a $0 consolidated monthly premium. Consolidated premiums range from $0.00 to $298.60 per month, and in-network out-of-pocket maximums range from $1000.00 to $9250.00.
Other 5.0-star Medicare Advantage plans in Oakland County (first three alphabetically):
| Plan | Organization | Premium | MOOP |
|---|---|---|---|
| Erickson Advantage Champion (HMO-POS C-SNP) | UnitedHealth Group, Inc. | $182.00 | $3400.00 |
| Erickson Advantage Freedom (HMO-POS) | UnitedHealth Group, Inc. | $89.00 | $4900.00 |
| Erickson Advantage Guardian (HMO-POS I-SNP) | UnitedHealth Group, Inc. | $0.00 | $1000.00 |
For the full county plan directory, see all Medicare plans in Oakland County, Michigan.
How to verify your doctors take this plan
Network participation changes throughout the year; we hold no provider-network data, so verify directly with these three sources before you decide:
- Open the plan's official Medicare.gov page and use its provider-directory link: Medicare.gov Plan Finder — H5521-404.
- Call the plan (CVS Health Corporation) using the member-services number listed on that plan page and ask whether each doctor, hospital, and pharmacy is in-network for 2026.
- Get free, unbiased help from your State Health Insurance Assistance Program (SHIP) — see free unbiased Medicare help from SHIP.
What H5521-404 means
CMS assigns every Medicare Advantage and Part D offering a plan identifier made of three parts. In H5521-404, the leading H marks the contract type (H = Medicare Advantage / Part C contract), the four digits 5521 are the contract number issued to the organization, and the three-digit 404 is the plan benefit package under that contract. The segment ID 0 identifies the service-area segment within the plan (0 = the default single segment).
Frequently asked questions
Is Aetna Medicare Signature Extra (PPO) an HMO or PPO?
Aetna Medicare Signature Extra (PPO) is a PPO Medicare Advantage plan.
Does Aetna Medicare Signature Extra (PPO) include prescription drug coverage?
Yes — Aetna Medicare Signature Extra (PPO) is a Medicare Advantage plan with prescription drug coverage (MA-PD) and a $615.00 annual Part D drug deductible for 2026.
What is the maximum out-of-pocket cost for Aetna Medicare Signature Extra (PPO)?
The 2026 in-network maximum out-of-pocket limit for Aetna Medicare Signature Extra (PPO) is $4700.00, per the CMS CY2026 Landscape file.
What counties offer Aetna Medicare Signature Extra (PPO) (H5521-404)?
Aetna Medicare Signature Extra (PPO) (H5521-404) is offered in 13 Michigan counties: Clinton County, Genesee County, Hillsdale County, Ingham County, Jackson County, Lenawee County, Livingston County, Macomb County, Oakland County, Shiawassee County, St. Clair County, Washtenaw County, and Wayne County.
Sources
- CMS, Plan Year 2026 Medicare Advantage & Part D Landscape source file (March 2026) — retrieved 2026-07-18. Overall star rating year: 2026.
- Medicare.gov Plan Finder — compare plans and enroll.