Medicare Advantage

How Medicare plan choices in Rancho Cucamonga compare with neighboring county markets for 2027

For 2027, Rancho Cucamonga is looking at 95 Medicare Advantage plans: 14 new, 17 gone since 2026, and 52 still here but changed on premium, deductible, plan type or name, 20 of them under a new name. Below, how the lineup shifted in San Bernardino County and what to compare, with no plan ranked or recommended.

Medicare shoppers in Rancho Cucamonga often ask a simple question: are the choices here the same as what a friend or family member sees one county over? For 2027, the honest answer is that Medicare plan availability is drawn on county lines, so where you live inside the Inland Empire and greater Los Angeles metro really does shape your menu.

Rancho Cucamonga sits in San Bernardino County, and that county line is the one that matters when the Centers for Medicare & Medicaid Services (CMS) counts what is for sale. This article walks through how to think about those area-level counts, why the number in the next county over may look different, and how to use that information to decide.

Why the county you live in shapes your options

Medicare Advantage and Part D plans are approved and sold on a county-by-county basis. A carrier may offer a plan in San Bernardino County but not in Riverside, Los Angeles, or Orange County — or the reverse. That is why two retirees who live 15 minutes apart can open Medicare Plan Finder and see different lists.

For Rancho Cucamonga specifically, the San Bernardino County figures apply: 75 Medicare Advantage plans and 17 carriers offering Medicare Advantage with prescription drug coverage (MA-PD) for 2027, according to CMS Landscape data. Compared with 2026, 14 plans are new, 17 are not returning, and 20 have been renamed; 61 plans continue, and 32 of those change something in their terms (see your plan's ANOC for specifics). Central Health Medicare Plan is not offering plans in the county for 2027.

How to compare counts across nearby areas

When you look at plan counts across neighboring counties, resist the urge to treat "more plans" as "better." A larger count can mean more choice, but it can also mean more time sorting through options that look alike. Instead, use the count as a starting point and then filter by what actually matters for you:

• The doctors and hospitals you already use
• The specific prescriptions you take
• Whether you travel or split time between counties
• Whether you want extras like dental, vision, or hearing

If a family member lives in Riverside, Los Angeles, or Orange County and loves their plan, check whether that same plan or carrier is offered in San Bernardino County before assuming you can copy their choice.

What the star ratings tell you (and what they don't)

CMS rates Medicare Advantage and Part D contracts on a 1-to-5 scale, based on things like customer service, member complaints, and preventive care. Ratings can shift year to year, and a rating applies to a contract, which may cover many plans in many states. Check the current rating for any specific plan on medicare.gov before deciding.

Use ratings as one input among several. Your own doctors, drugs, and budget matter more to your day-to-day experience than any single score.

The 2027 rules that apply everywhere

Some things do not change based on your ZIP code. For 2027:

• The Part D out-of-pocket cap is $2,100 in 2026 ($2,400 in 2027). Once your covered drug spending hits that limit, you pay $0 for covered drugs the rest of the year.
• The Part D maximum deductible is $615 in 2026 ($700 in 2027). Plans may set a lower deductible, but not higher.
• The coverage gap, or "donut hole," has been eliminated since 2025. Part D now has three phases: deductible, initial coverage, and catastrophic.
• The Medicare Prescription Payment Plan lets you spread drug costs across the year in monthly payments, at no added charge.
• IRMAA (the income-related surcharge on Part B and Part D premiums) starts above $109,000 in income for a single filer in 2026.

How to decide, step by step

1. Start on medicare.gov and enter your Rancho Cucamonga ZIP code so Plan Finder pulls San Bernardino County's lineup. 2. Add your prescriptions and preferred pharmacy. This alone narrows the field quickly. 3. Check that your doctors and hospitals are in-network for any Medicare Advantage plan you consider. 4. If you split time in another county, look up that county too and see whether any plan is offered in both. 5. Call 1-800-MEDICARE or your local State Health Insurance Assistance Program (SHIP) — in California, that is HICAP — for free, unbiased help.

Key dates to keep

• Annual Enrollment Period: October 15 – December 7, 2026, for 2027 coverage that starts January 1.
• Medicare Advantage Open Enrollment: January 1 – March 31, if you are already in a Medicare Advantage plan and want to switch once.