Medicare Advantage

How Rialto's Medicare Field Compares Across the Inland Empire

San Bernardino County has 95 Medicare Advantage plans for 2027. Compared with 2026, 17 plans are not coming back, 14 are new, and 52 continuing plans changed in some way you should check before December 7, 20 of them under a new name. This guide covers what those numbers mean for Rialto, not which plan to pick.

If you live in Rialto and you're sizing up Medicare for the year ahead, it helps to know that plan availability isn't a Rialto-only question — it's a county question. Rialto sits in San Bernardino County, and every Medicare Advantage and Part D option you see advertised locally is actually built around the county footprint you share with neighbors in Fontana, San Bernardino, Ontario, and beyond.

That matters because the "field" of choices looks a little different depending on which county line you're on. Here's a plain-language snapshot of what's available in and around Rialto for 2027, using area-level counts from the CMS Medicare Plan Finder and Landscape files.

What "plan availability" really means around Rialto

Medicare Advantage and Part D plans are approved and priced by CMS at the county level. So when you hear a number like "98 plans available," that's the count of Medicare Advantage plans offered somewhere in San Bernardino County — the same county Rialto shares with cities like Redlands, Chino, and Victorville.

You won't necessarily see all 98 in your personal Plan Finder results. Networks, service areas, and eligibility rules (like Special Needs Plans for people with certain conditions) narrow the list down to what's actually available at your ZIP code.

The Rialto-area snapshot

Here's what the current county-level data shows for the area around Rialto:

• Medicare Advantage plans in San Bernardino County: 98
• Carriers offering MA-PD plans in the area: 16
• Stand-alone Part D plans listed for the area: 0 in the current file (see note below)
• Residents 65 and older in the county: about 276,984

A quick note on that "0" for stand-alone Part D: stand-alone drug plans are sold by region, not county, and California is its own Part D region. If you have Original Medicare and want drug coverage, stand-alone Part D plans are still available to you through the statewide region — you'll see them when you run Plan Finder with your ZIP code.

How Rialto compares to nearby areas

Because plan availability tracks with county, the number of Medicare Advantage options a Rialto resident sees is the same number a neighbor in Fontana or Highland sees — they're all in San Bernardino County. Cross the line into Riverside County (say, Jurupa Valley or Riverside), and the count changes because that's a different service area with its own set of approved plans.

If you're comparing the Inland Empire broadly, the takeaway is that this metro is one of the more plan-dense parts of the country. That's good news for choice, but it also means the shopping step matters — a lot of options can feel overwhelming without a filter.

What's new for 2027 you should factor in

A few program-level rules apply no matter which plan you look at:

• Part D out-of-pocket cap: Once your covered drug spending reaches $2,400 in 2027, you pay nothing more for covered drugs the rest of the year.
• Part D deductible: Plans can charge up to $700 as a deductible in 2027, though many charge less.
• No more donut hole: The coverage gap phase was eliminated in 2025. Part D now has three phases: deductible, initial coverage, and catastrophic.
• Medicare Prescription Payment Plan: You can choose to spread your drug costs into monthly payments instead of paying at the pharmacy counter.
• IRMAA: Higher-income enrollees pay a Part B and Part D surcharge. In 2026, IRMAA starts above $109,000 in income for a single filer.

Star Ratings, briefly

You'll see CMS Star Ratings (1 to 5 stars) attached to Medicare Advantage and Part D contracts. Ratings measure things like customer service, care quality, and member complaints. They're a useful data point, but they aren't the whole picture — network, drug formulary, and your own doctors matter just as much. In the current data for the area, no contracts are shown at 4 stars or higher, so leaning on stars alone won't get you very far here; comparing the details of the plans themselves will.

How to shop from Rialto without getting lost

1. Start at medicare.gov/plan-compare. Enter your Rialto ZIP code and your prescriptions. Plan Finder will show only the plans that actually serve your address. 2. Check your doctors and pharmacies. Networks vary plan by plan, even from the same carrier. 3. Mark your calendar. Annual Enrollment is Oct. 15–Dec. 7. If you're already in a Medicare Advantage plan, you also get a second window, Jan. 1–Mar. 31, to switch once. 4. Get free local help. California's SHIP is called HICAP (Health Insurance Counseling and Advocacy Program). Counselors don't sell anything.