Medicare Advantage
Aetna's 2027 Medicare Advantage lineup in San Diego: 2 new plans, 5 not returning
SAN DIEGO — Fall 2026. If you have an Aetna Medicare Advantage plan in San Diego County, your 2027 lineup looks different from the one you have today. According to the CMS Medicare Advantage Landscape files, Aetna (CVS Health) is offering four Medicare Advantage plans in the county next year — down from seven in 2026 — with two brand-new plans, two renamed plans, and five plans that will not be returning.
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Key takeaways
- Aetna is offering 4 Medicare Advantage plans in San Diego County for 2027 (3 HMO and 1 HMO-POS), including 1 Chronic Condition Special Needs Plan; all 4 include drug coverage.
- Five of Aetna's 2026 San Diego plans are not returning for 2027, two are new, and two have been renamed — your Annual Notice of Change spells out exactly how your plan is affected.
- If you do nothing and your current plan is still offered, it renews on January 1, 2027 with the changes described in that notice.
- 14 other carriers also sell Medicare Advantage plans in San Diego County next year (85 plans in total), so you can compare before December 7.
MyMedicarePlans.org is an independent consumer site and is not Aetna. We are walking through this carrier's local lineup because the Annual Enrollment Period runs October 15 through December 7, 2026, and any change you make takes effect January 1, 2027.
What Aetna is offering in San Diego County for 2027
San Diego is in San Diego County, where Medicare Advantage availability is set at the county level. For plan year 2027, Aetna (CVS Health) is offering four Medicare Advantage plans here:
- Aetna Medicare Chronic Care (HMO C-SNP) — HMO C-SNP, with drug coverage, new for 2027
- Aetna Medicare Eagle (HMO) — HMO, with drug coverage, new for 2027
- Aetna Medicare Prime (HMO) — HMO-POS, with drug coverage, renamed (was Aetna Medicare Prime (HMO-POS))
- Aetna Medicare Signature Legacy (HMO) — HMO, with drug coverage, renamed (was Aetna Medicare Signature (HMO))
All four plans include Part D prescription drug coverage. The table on this page lists them in full.
What's new, what's renamed, what's leaving
Two Aetna plans are new to the San Diego County lineup for 2027: the Aetna Medicare Chronic Care (HMO C-SNP) and the Aetna Medicare Eagle (HMO). The Chronic Care plan is a C-SNP — a Chronic Condition Special Needs Plan — which is designed for people with specific qualifying health conditions. Aetna is not offering a D-SNP (for people with both Medicare and Medicaid) or an I-SNP (for people living in an institution) in San Diego County for 2027.
Two returning plans have been renamed. Aetna Medicare Prime (HMO) is the new name for what was Aetna Medicare Prime (HMO-POS), and Aetna Medicare Signature Legacy (HMO) is the new name for what was Aetna Medicare Signature (HMO). If you are currently in either plan, read your Annual Notice of Change carefully — a name change can come with other changes too.
Five Aetna plans sold in San Diego County in 2026 are not returning for 2027. If you are enrolled in one of them, Aetna will send you a notice explaining your options. You will not be left without coverage automatically, but you will need to pick a new plan during the Annual Enrollment Period, or you will be moved back to Original Medicare.
How to check a plan against your doctors and prescriptions
Before December 7, it is worth taking 20 minutes to do three things:
1. Pull out your Annual Notice of Change (ANOC). It arrived in September. It lists every change — premium, deductible, copays, drug tiers, network — your current plan is making for 2027. 2. Check your doctors. Call each provider's billing office and ask whether they will be in-network for the specific plan name you are considering in 2027. Networks change on January 1, and a provider directory from today may not reflect next year. 3. Check your prescriptions. Use the Medicare Plan Finder at medicare.gov to enter the drugs you take and the pharmacy you use. Plan Finder shows you the 2027 formulary and the estimated yearly cost for each plan.
If you would rather do it by phone, call 1-800-MEDICARE (TTY 1-877-486-2048), 24 hours a day, seven days a week.
The other numbers to know for 2027
CMS has confirmed a few program-level figures for 2027 that apply no matter which plan you pick:
- The Part D out-of-pocket cap rises to $2,400 in 2027 (it is $2,100 in 2026).
- The Part D maximum deductible rises to $700 in 2027 (it is $615 in 2026).
- The Part D national base beneficiary premium is $41.33 for 2027. That is a formula input, not what any one plan charges.
The 2027 Part B standard premium and deductible, and the 2027 IRMAA income brackets, have not been announced yet. CMS typically publishes those in the fall, usually in November. We will not estimate them here.
The donut hole has been gone since 2025, replaced by a three-phase Part D benefit. If large drug bills hit early in the year, the Medicare Prescription Payment Plan lets you spread what you owe across the calendar year in monthly installments at no extra cost.
You have options beyond one carrier
Aetna is one of 15 carriers offering Medicare Advantage plans in San Diego County next year, and the full county lineup includes 85 plans. If an Aetna plan does not fit your doctors or prescriptions, there is room to compare. Plan Finder at medicare.gov lets you sort every plan in the county side by side.
And if you do nothing — and your current plan is still being offered in 2027 — it will simply renew on January 1, with the changes in your ANOC.
By the numbers
Medicare Part B premium, 2006–2026
The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.
Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.
By the numbers
How people get Medicare in San Diego County
(MA penetration in San Diego County)
MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.
2027 plan lineup
Aetna Medicare Advantage plans in San Diego County for 2027
CMS lists 4 Aetna Medicare Advantage plans in San Diego County for 2027, alphabetically by carrier. 14 other carriers also offer plans there.
| Plan | Type | Drug coverage | For 2027 |
|---|---|---|---|
| Aetna (CVS Health) 4 plans | |||
| Aetna Medicare Chronic Care (HMO C-SNP) | HMO C-SNP | Yes | New |
| Aetna Medicare Eagle (HMO) | HMO | Yes | New |
| Aetna Medicare Prime (HMO) | HMO-POS | Yes | Renamed |
| Aetna Medicare Signature Legacy (HMO) | HMO | Yes | Renamed |
Source: CMS Medicare Advantage Landscape Source Files, plan years 2026 and 2027. Plan availability is set at the county level. No plan is ranked or recommended; premiums, benefits, networks and star ratings are not shown. Plan details come from the Medicare Plan Finder at medicare.gov or the plan itself.
The 2027 choices, by type
How Aetna Medicare Advantage plans in San Diego County break down for 2027
HMO plans use a network and usually a primary-care doctor and referrals; HMO-POS plans add some out-of-network coverage; PPO plans also cover out-of-network care, at a higher share; PFFS plans pay any provider that accepts the plan’s terms. Special Needs Plans serve people with Medicare and Medicaid (D-SNP), certain chronic conditions (C-SNP) or living in an institution (I-SNP).
Source: CMS Medicare Advantage Landscape Source Files, plan years 2026 and 2027. Plan availability is set at the county level. No plan is ranked or recommended; premiums, benefits, networks and star ratings are not shown. Plan details come from the Medicare Plan Finder at medicare.gov or the plan itself.
Key dates
Medicare enrollment periods at a glance
- Around your 65thInitial Enrollment PeriodA 7-month window around the month you turn 65 — your first chance to sign up.
- October 15 – December 7Annual Enrollment PeriodAnyone with Medicare can join, switch, or drop a Medicare Advantage or Part D plan.
- January 1 – March 31Medicare Advantage Open EnrollmentIf you're already in a Medicare Advantage plan, you can make one change.
- January 1 – March 31General Enrollment PeriodFor people who missed their first chance to sign up for Part B.
- VariesSpecial Enrollment PeriodTriggered by life events like moving or losing other coverage.
Dates are set by Medicare and apply nationwide. Confirm your personal windows at Medicare.gov or 1-800-MEDICARE.
Explore
When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
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The parts of Medicare
Good to know
Frequently asked questions
What happens if my Aetna plan is one of the five not returning in 2027?
My plan was renamed. Do I need to re-enroll?
What is a C-SNP, and can anyone join one?
When do I have to decide by?
- CMS — MA Landscape Source File (plan-level availability by county)
- CMS — MA Landscape Source Files, current and coming plan year (year-over-year comparison)
- CMS — Medicare enrollment periods (medicare.gov)
For personalized answers, contact Medicare.gov or 1-800-MEDICARE.
Also for San Diego
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This page was last updated: October 2026.