Medicare Advantage
Kaiser Permanente's 2027 Medicare Advantage plans in Stockton: the three on offer
STOCKTON, Calif. — Fall 2026. If you have a Kaiser Permanente Medicare Advantage plan in Stockton, or you are weighing one for next year, here is the simple picture for 2027: Kaiser Permanente is offering three Medicare Advantage plans in San Joaquin County, the same count it offers for 2026. All three are HMOs, all three include drug coverage, and one is a Dual Eligible Special Needs Plan (D-SNP) for people who have both Medicare and Medi-Cal.
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Key takeaways
- Kaiser Permanente is offering 3 Medicare Advantage plans in San Joaquin County for 2027 — all HMOs, all with drug coverage, and 1 is a D-SNP.
- No Kaiser Permanente plans are leaving the county for 2027 and none are new, but each plan's Annual Notice of Change (ANOC) will spell out what is different next year.
- The Annual Enrollment Period runs October 15 – December 7, 2026; any choice you make takes effect January 1, 2027.
- To check a plan against your doctors and drugs, use the Medicare Plan Finder at medicare.gov or call 1-800-MEDICARE.
| Fact | Figure | Source |
|---|---|---|
| Medicare Advantage plans offered in San Joaquin County (2026) | 44 | CMS |
| Medicare Advantage plans offered in San Joaquin County (2027) | 39 | CMS |
| Plans not returning for 2027 / new for 2027 | 14 / 9 | CMS |
| Organizations offering Medicare Advantage in San Joaquin County (2026) | 12 | CMS |
| Share of eligible beneficiaries in Medicare Advantage, San Joaquin County | 55% | CMS |
| Residents age 65 and older, San Joaquin County | 107,730 | U.S. Census Bureau |
| Part B standard monthly premium (2026) | $202.90 | Medicare.gov |
| Part D out-of-pocket cap (2026) | $2,100 | CMS |
| Part D out-of-pocket cap (2027) | $2,400 | CMS |
| Annual Enrollment Period (for 2027 coverage) | October 15 – December 7, 2026 | Medicare.gov |
| Medicare Advantage Open Enrollment Period | January 1 – March 31 | Medicare.gov |
Area counts are for the county as a whole and are not a recommendation of any plan. Program figures are set nationally.
This article is a plain-language snapshot of that lineup so you can check your doctors and prescriptions against it before the Annual Enrollment Period closes on December 7, 2026. MyMedicarePlans.org is an independent consumer site; we are not Kaiser Permanente, and 10 other carriers also sell Medicare Advantage plans in San Joaquin County for 2027 (39 plans in all).
Which Kaiser Permanente Medicare Advantage plans are offered in Stockton for 2027?
Kaiser Permanente is offering three Medicare Advantage plans in San Joaquin County — the county Stockton is in — for the 2027 plan year. All three are HMOs and all three include Part D prescription drug coverage. In alphabetical order, they are:
- Kaiser Permanente Dual Complete North P20 (HMO D-SNP)
- Kaiser Permanente Senior Advantage Basic SnJoaq (HMO)
- Kaiser Permanente Senior Advantage Enhanced SnJoaq (HMO)
The table below lists every plan. We cannot publish the premiums, copays, deductibles, networks, drug lists or star ratings for these plans here — those details belong on the Medicare Plan Finder and in each plan's Evidence of Coverage, where they are kept current.
What is a D-SNP, and who is the Kaiser Permanente D-SNP in San Joaquin County for?
A D-SNP, or Dual Eligible Special Needs Plan, is a type of Medicare Advantage plan built for people who have both Medicare and Medicaid (in California, Medi-Cal). Kaiser Permanente Dual Complete North P20 is the one D-SNP in the carrier's 2027 Stockton-area lineup.
If you are not enrolled in Medi-Cal, you generally will not qualify for a D-SNP. The other two Kaiser Permanente plans in the county are standard HMOs open to anyone with Medicare who meets the plan's service-area and enrollment rules.
What is new or not returning from Kaiser Permanente in Stockton for 2027?
Nothing is leaving and nothing is new. For 2027, Kaiser Permanente has 0 plans not returning in San Joaquin County, 0 new plans, and 0 renamed plans compared with 2026 — the same three plans continue.
That does not mean the plans are identical to 2026. Each plan sends an Annual Notice of Change (ANOC) every fall listing what is changing for the new year — things like the premium, the drug formulary, the pharmacy network, cost-sharing for office visits, or extra benefits. If you are already enrolled, read the ANOC carefully; the specifics are in there.
How do I check a Kaiser Permanente plan against my doctors and prescriptions before December 7?
The fastest way is the official Medicare Plan Finder at medicare.gov/plan-compare. Enter your ZIP code (any Stockton ZIP will pull San Joaquin County plans), add the names of your prescription drugs and your preferred pharmacy, and the tool will show each plan's estimated yearly drug cost and whether your drugs are on the formulary.
For doctors and hospitals, the Plan Finder is a starting point, but confirm the network two ways:
1. Call Kaiser Permanente's member or sales line and ask whether the specific plan covers the providers and facilities you use. 2. Call your doctor's office directly and ask whether they accept the exact plan name you are considering for 2027.
If you prefer the phone, 1-800-MEDICARE (TTY 1-877-486-2048) is open 24 hours a day, 7 days a week.
What are the Medicare dates and dollar figures I need to know for 2027?
The Annual Enrollment Period is October 15 – December 7, 2026, and any plan choice you make in that window starts January 1, 2027. If you do nothing, your current plan renews automatically for 2027 if it is still offered, with the changes listed in your ANOC. A second window, the Medicare Advantage Open Enrollment Period, runs January 1 – March 31, 2027, and lets people already in a Medicare Advantage plan switch once.
A few program-level figures CMS has already confirmed for 2027:
- Part D out-of-pocket cap: $2,400 in 2027 (up from $2,100 in 2026).
- Part D maximum deductible: $700 in 2027 (up from $615 in 2026).
- Part D national base beneficiary premium: $41.33 for 2027 (this is a formula input, not what any specific plan charges).
The 2027 Part B standard premium and deductible, and the 2027 IRMAA income brackets, have not been announced yet; CMS typically publishes them later in the fall.
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 Joaquin County
(MA penetration in San Joaquin 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
Kaiser Permanente Medicare Advantage plans in San Joaquin County for 2027
CMS lists 3 Kaiser Permanente Medicare Advantage plans in San Joaquin County for 2027, alphabetically by carrier. 10 other carriers also offer plans there.
| Plan | Type | Drug coverage | For 2027 |
|---|---|---|---|
| Kaiser Permanente 3 plans | |||
| Kaiser Permanente Dual Complete North P20 (HMO D-SNP) | HMO D-SNP | Yes | Returning |
| Kaiser Permanente Senior Advantage Basic SnJoaq (HMO) | HMO | Yes | Returning |
| Kaiser Permanente Senior Advantage Enhanced SnJoaq (HMO) | HMO | Yes | Returning |
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 Kaiser Permanente Medicare Advantage plans in San Joaquin 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
Is MyMedicarePlans.org affiliated with Kaiser Permanente?
What happens if I do nothing by December 7, 2026?
Can I switch between the Kaiser Permanente HMO plans after January 1?
Where can I get help comparing plans one-on-one?
- 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 Stockton
Sources and methodology
- CMS, Medicare Advantage and Part D Landscape Source Files
- CMS, Medicare Advantage state/county penetration and enrollment files
- U.S. Census Bureau, American Community Survey (table B01001, age 65 and older)
- Medicare.gov, Medicare costs (Part B premium)
- CMS, Medicare prescription drug coverage (Part D) program rules
- CMS, Medicare Advantage and Part D plan-year announcements
- Medicare.gov, enrollment periods and plan rules
Figures cited in this article
- CMS Medicare Advantage Landscape Source Files (plan years 2026 and 2027): the Kaiser Permanente plan names, plan types, SNP status and drug-coverage status in San Joaquin County, and the year-over-year change counts.
- Medicare.gov: the Annual Enrollment Period dates, the Medicare Advantage Open Enrollment Period, and the Plan Finder tool for comparing plans against your doctors and drugs.
- CMS: the confirmed 2027 Part D out-of-pocket cap, Part D maximum deductible, and Part D national base beneficiary premium.
How we put this together: area counts come from the CMS files listed above for the county that contains this city, program figures come from CMS, Medicare.gov and the Social Security Administration, and no plan is ranked or recommended.
By The Medicare Desk · Published . For personalized answers, contact Medicare.gov or 1-800-MEDICARE.
Content Integrity Standards
- No invented figures. Program-level numbers come from CMS / Medicare.gov; we never use placeholder data.
- No plan recommendations. This is educational content. We don't score or recommend specific plans; any Star Ratings shown are Medicare's own CMS ratings, stated as published.
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This page was last updated: October 2026.