Medicare Supplement

Before You Compare Medigap in Modesto This Winter

MODESTO, Calif. — As 2027 approaches, Medigap shoppers in Stanislaus County are working through a familiar mix of moving parts: which standardized plan letters they can still buy, how the Part B deductible reset affects Plans G and N, and when California insurers file their new rates. None of these are dramatic overnight changes, but together they shape what a Modesto resident sees when they compare policies this fall and winter.

Medicare SupplementModesto, CA

Here is what is actually shifting, and where to look for the details that apply to you.

Which plan letters you can actually buy

Medigap policies are standardized by letter across most of the country, and California follows that framework. If you are newly eligible for Medicare now, the letters open to you are A, B, D, G, G-HD, K, L, M and N. Plans C and F are still in force for people who kept them, but they are only sold to those who became eligible for Medicare before January 1, 2020, because federal law closed them to newer enrollees.

This is not a 2027-specific change — it is the rule that has shaped Medigap since 2020 — but it comes up every fall when Modesto residents turning 65 start comparing options and wonder why a neighbor has a Plan F they cannot buy.

The Part B deductible reset and why it matters for Plans G and N

Plan G and Plan N are the two letters most new enrollees compare, and both are designed around the annual Part B deductible. You pay that deductible out of pocket each calendar year before the Medigap plan begins picking up its share of Part B costs.

CMS announces the new Part B deductible amount for the coming year each fall, and it resets every January 1. That reset is automatic — it is not something your insurer changes and not something you need to enroll into. If your Medigap policy is Plan G or N, plan on meeting that fresh deductible at the start of 2027 before your Medigap coverage kicks in on Part B services.

Rate-adjustment season in California

Medigap premiums are not set by Medicare. In California, insurers file proposed rate changes with the California Department of Insurance, and those filings are public. Rates can be adjusted at renewal, and the timing depends on the carrier and the plan.

If you already have a Medigap policy and get a renewal notice with a new premium, you have a few practical steps:

• Read the notice carefully and note the effective date.
• Look up the filing on the California Department of Insurance website to see the rationale.
• Compare your current plan letter against the same letter from other carriers — because plans are standardized, the coverage is the same for a given letter, so premium and company service are the main differences.
• Ask about medical underwriting before you switch. Outside your one-time Medigap open enrollment window (the six months starting when you are 65 and enrolled in Part B), California insurers can generally use underwriting, though the state's "birthday rule" gives you an annual window to move to an equal or lesser plan with the same carrier or, under current rules, another carrier offering the same letter.

Which insurers sell Medigap in California

The MEDIGAP DATA block below (and the table on this page) lists every California-approved Medigap insurer we track and the plan letters each one offers. The list ranges from national names such as AARP - UnitedHealthcare Insurance Company, Anthem BlueCross - California, Blue Shield of California Life & Health Insurance Company, Humana, Mutual of Omaha and State Farm Mutual Automobile Insurance Company to smaller carriers such as Everence Association Inc., Lumos Insurance and USAA Life Insurance Company.

Insurer participation can shift from year to year as companies file to enter or exit the California market. For the most current list of who is actively selling in your ZIP code, the Medicare.gov Medigap policy search is the authoritative source.

What to do before you enroll or renew

• Confirm your eligibility window. Your best pricing protection is your six-month Medigap open enrollment period at 65.
• Pull the current Part B deductible from Medicare.gov so you know what a Plan G or N will leave you paying at the start of 2027.
• Check California Department of Insurance filings if your renewal premium has changed.
• Talk to HICAP, California's free State Health Insurance Assistance Program, for one-on-one help. They do not sell policies.