Hillsborough 2027: 133 Medicare Advantage Plans on Paper — But the County's Solo Seniors Could Be Left Holding the Bag When Carriers Walk

Why Is a County of 1.5 Million Seniors Getting a Two-Carrier Medicare Market?

Hillsborough County is not a small rural backwater. Its population sits at 1,535,564 according to CDC PLACES data — larger than 11 U.S. states. Tampa General Hospital is here. AdventHealth and HCA Florida hospitals dot the county. And yet, when you pull the published plan details from CMS Medicare Plan Finder for 2027, you find something that should make every senior in the county uncomfortable: of the 133 plans on record, the detailed plan data that has cleared CMS review as of April 10, 2026 shows exactly two carrier organizations holding the table.

UnitedHealth Group (via AARP-branded contracts) and Ultimate Healthcare Holdings, LLC account for all 10 plans with published CMS details so far this cycle. That's not necessarily the final picture — carriers file and update throughout the spring — but it is the picture seniors have to work with right now. And concentration at the top of a Medicare Advantage market is historically the leading indicator of what happens when one of those carriers decides to walk. (Ask the 23 plans that just exited the DC metro. Or the carriers that fled Broward County.)

The specific threat for 2027: when a dominant carrier in a concentrated market pulls plans, there is no cushion. The remaining options narrow fast, and the people who get hurt first are the ones who can't navigate a re-enrollment on their own — which is exactly the population SeniorWire is here to warn.

Who Lives Alone in Hillsborough — and Why That Makes Plan Exits Dangerous

Florida has one of the highest rates of seniors living alone in the United States. U.S. Census Bureau data consistently places Florida among the top five states for solo senior households, and Hillsborough County — with its mix of retiree communities, working-class neighborhoods in East Tampa, and snowbird-to-permanent-resident pipeline — mirrors that trend.

When a Medicare Advantage plan exits a county, CMS triggers a Special Enrollment Period (SEP). That sounds protective on paper. In reality, it means a letter arrives in October, you have weeks to compare plans on a website designed by committee, and if you're managing COPD or a recent cancer diagnosis — 7.2% of Hillsborough adults have non-skin cancer or melanoma per CDC PLACES 2023 — you are doing that navigation alone. No family member to call. No caregiver to cross-check formularies.

What Are the Actual Plans in Hillsborough Right Now — Every Published Detail

Let's put the data on the table. Here is every plan with published CMS details for Hillsborough County as of April 10, 2026. (Source: CMS Medicare Plan Finder.)

Read that table carefully. Of the 7 UnitedHealth plans shown, three carry a 4.5-star rating — H1045-059, H1045-028, and H1045-045, all HMO-POS products, all $0/month with Part D. Three carry a 4.0-star rating. And two — both Regional PPOs under contract R0759 — sit at 3.5 stars. Under CMS quality rules, plans that remain below 3.5 stars for multiple consecutive years face termination. That's not a threat from SeniorWire; that's a CMS rule. (We're just the ones who read the regulations so you don't have to.)

The Single-Carrier COPD Problem: What Happens If Ultimate Healthcare Holdings Leaves?

That chart is the story in one image. Hillsborough County has 5.6% of its adult population living with COPD — translating to roughly 85,990 adults in a county of 1.5 million. Cancer rates (non-skin/melanoma) sit at 7.2%, or approximately 110,560 adults. Against that backdrop of serious chronic illness, there are exactly two C-SNP plans specifically designed for chronic and disabling conditions — and both come from the same single carrier, Ultimate Healthcare Holdings.

If Ultimate Healthcare Holdings files a market exit notice this spring (CMS deadline: by mid-May 2026 for the 2027 plan year), every COPD patient enrolled in H2962-025 or H2962-026 loses their specialized coverage simultaneously. There is no second C-SNP carrier waiting in the wings based on current published data. They would be forced into a general Medicare Advantage plan — or back to Original Medicare — while managing a chronic respiratory condition. Alone.

What Does the $62/Month Regional PPO Actually Get You — And Why the Star Rating Matters

Let's talk about contract R0759-001: AARP Medicare Advantage from UHC FL-0031, a Regional PPO, $62/month, Part D included, rated 3.5 stars. This is the highest-premium plan in Hillsborough's published dataset, and it's also the only plan that gives you Regional PPO flexibility — meaning you can see out-of-network providers (at higher cost) without a referral. For a senior living alone who needs specialist access across a broad network, that flexibility has real value.

But 3.5 stars is not a comfortable place to be. Under CMS rules, plans that score below 3.5 stars for three consecutive years lose their ability to market to new enrollees and can eventually face contract termination. R0759-001's companion Regional PPO, R0759-002 (the "Patriot No Rx" version without Part D), also carries a 3.5-star rating. Two low-performing plans from the same regional PPO contract is a pattern worth watching.

The three 4.5-star plans — H1045-059, H1045-028, and H1045-045 — are all $0/month HMO-POS products. High quality, low cost. The tradeoff is network restriction: HMO-POS plans require you to use in-network providers for most services, with limited out-of-network flexibility. For a senior living alone who relies on a specific specialist or hospital, switching from a PPO to an HMO-POS is not a neutral event. It can mean losing access to a doctor you've seen for a decade.

What Should Hillsborough Seniors Living Alone Actually Do Right Now?

SeniorWire does not recommend specific plans. What we do is read every filing, every star rating update, every carrier press release — and tell you what the data says before it lands as a surprise in your mailbox in October.

Here is what the data tells you to do in April 2026:

1. Locate your plan's Contract/Plan ID. It's on your insurance card and your Annual Notice of Change (ANOC). If you're on H2962-025 or H2962-026 (Ultimate Healthcare COPD C-SNPs), you are in the highest-risk category for a single-point-of-failure exit. If you're on R0759-001 or R0759-002 (3.5-star Regional PPOs), you are in the quality-threshold watch zone.

2. Watch for CMS star rating updates in October 2026. If either R0759 contract drops below 3.0 stars, the exit risk accelerates sharply. CMS publishes updated ratings at cms.gov/medicare/health-drug-plans/part-c-d-performance-data.

3. If you live alone, make a plan NOW for how you will navigate re-enrollment if your plan exits. That means identifying your State Health Insurance Assistance Program (SHIP) counselor in Hillsborough County. Florida SHINE (Serving Health Insurance Needs of Elders) is free: call 1-800-963-5337. Do not wait until October when every counselor in Tampa is underwater with calls.

4. The D-SNP is a different animal. If you are dual-eligible (both Medicare and Medicaid) and enrolled in H2962-035 — Advantage Plus by Ultimate (Full), $4.80/month, 4.0 stars — you should also be watching CMS's Medicaid policy changes. We've covered those at the federal level; the Hillsborough County angle is that Ultimate Healthcare holds the only D-SNP in this county's published data. One carrier. One plan. Zero redundancy.

The Bottom Line on Hillsborough's 2027 Medicare Advantage Market

A county of 1.5 million people with a 5.6% COPD rate, a 7.2% cancer rate, and a large and growing population of seniors living alone deserves a Medicare Advantage market with redundancy built in. What the CMS data shows as of April 10, 2026 is a market where the entire chronic-care SNP segment sits on one carrier's shoulders, where the only flexible-network plans with drug coverage carry below-average star ratings, and where the $0-premium, 4.5-star options are all network-restricted HMOs.

None of that is illegal. None of that is necessarily wrong. But when a plan exits — and across