Medicare Part D
Part D in 2027: Stockton, Calif. Guide
Stockton, Calif. — If you take prescription drugs and have Medicare, 2027 brings another round of changes to Part D. The out-of-pocket cap is going up, the deductible has a new ceiling, and the old "donut hole" remains gone for good. Here's a plain-English look at how Part D works next year, and where Stockton readers can go for help.
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Will your prescriptions still be covered in 2027?
Part D plans rewrite their drug lists every year — tiers move, pharmacies change, drugs drop off. One call checks your exact medications against the 2027 plans in your area.
- Every prescription checked, name by name
- Your pharmacy checked for preferred pricing
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Key takeaways
- In 2027, Part D drug coverage has three phases instead of four, since the old “donut hole” gap was eliminated starting in 2025.
- No Part D plan can charge a deductible higher than $700 in 2027, though some plans set it lower or skip it entirely.
- Once out-of-pocket drug spending reaches $2,400 in 2027 (up from $2,100 in 2026), you pay nothing for covered Part D drugs for the rest of the year.
- A free, optional Medicare Prescription Payment Plan lets you spread out-of-pocket drug costs into monthly payments instead of paying it all at the pharmacy, though it doesn't lower your total costs.
The three phases of Part D in 2027
Part D used to have four phases, including the confusing coverage gap known as the donut hole. As of 2025, that gap is gone. In 2027, your Part D coverage moves through three phases:
1. Deductible phase. You pay the full negotiated price for your drugs until you meet your plan's deductible. In 2026, no Part D plan can charge a deductible higher than $615. Some plans set a lower deductible, and some set none at all. 2. Initial coverage phase. Once you've met the deductible, you pay a copay or coinsurance for each prescription, and your plan pays the rest. You stay in this phase until your out-of-pocket spending on covered drugs hits the annual cap. 3. Catastrophic phase. Once your out-of-pocket drug spending reaches $2,100 in 2026, you pay $0 for the rest of the calendar year on covered Part D drugs. This is the new annual cap, up from $2,000 in 2025.
Those figures come from CMS — Medicare Part D program rules (medicare.gov).
What the $2,400 cap actually means
The cap is one of the most important protections for people who take expensive medications. Before 2025, there was no yearly limit on what you could pay out of pocket for Part D drugs. Now, once your spending hits $2,400 in 2027, you're done paying for covered prescriptions until January.
A few things to keep in mind:
- The cap applies to covered Part D drugs. It does not include your monthly plan premium.
- It resets every January 1.
- Only your out-of-pocket costs count — not what the plan pays.
The Medicare Prescription Payment Plan
If paying a big drug bill at the pharmacy counter is hard on your budget, there's a newer option called the Medicare Prescription Payment Plan. It lets you spread your Part D out-of-pocket costs across the calendar year in monthly payments instead of paying all at once at the pharmacy.
It doesn't lower your total costs — you still pay the same amount over the year — but it can make cash flow easier, especially early in the year when a deductible might hit all at once. Signing up is free and optional. You can enroll through your Part D plan.
Part D in Stockton and San Joaquin County
Stockton is in San Joaquin County, where Medicare beneficiaries can choose Part D coverage two ways: a standalone Prescription Drug Plan added to Original Medicare, or a Medicare Advantage plan that includes drug coverage. The rules above — the $700 deductible ceiling in 2027, the $2,400 cap in 2027, the three phases — apply to Part D coverage no matter which route you choose.
Plan availability is set at the county level, so what's offered in Stockton is the same as what's offered elsewhere in San Joaquin County. To see the specific plans available at your ZIP code, use the Plan Finder at medicare.gov.
A quick word on IRMAA
Most people pay the standard Part D premium set by their plan. But if your income is higher, you may pay an extra amount called IRMAA (Income-Related Monthly Adjustment Amount) on top of your premium. In 2026, IRMAA surcharges start for single filers with income above $109,000 (and married couples filing jointly above roughly double that). Social Security uses your tax return from two years ago to decide.
Key dates to remember
- Annual Enrollment Period: Oct. 15 – Dec. 7. This is when you can join, switch, or drop a Part D or Medicare Advantage plan for the following year.
- Medicare Advantage Open Enrollment: Jan. 1 – March 31. If you're already in a Medicare Advantage plan, you can switch to another one or return to Original Medicare (and add a Part D plan) during this window.
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.
Prescription coverage
How Medicare Part D works in 2027
The old coverage gap (“donut hole”) is eliminated as of 2025 (three phases now). There's now a hard yearly cap of $2,400 in 2027 on what you pay out of pocket for covered drugs, and you can spread those costs across the year with the Medicare Prescription Payment Plan.
Try it
How the 2026 Part D drug cap works
Slide to your estimated yearly prescription costs and see how the new $2,100 out-of-pocket cap protects you. This illustrates the standard Part D benefit; your plan may structure costs differently.
Once your out-of-pocket spending on covered drugs reaches $2,100, you pay nothing more for the rest of 2026. Confirm details at Medicare.gov.
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.
Good to know
Frequently asked questions
Do I still hit a donut hole in 2027?
Does the $2,400 cap include my monthly premium?
What if I can't afford my drugs even with the cap?
- CMS — Medicare Part D program rules (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.