What Medicare Advantage Carriers Serve Washington County, Tennessee?

Who's active in this market

UnitedHealthcare, Humana, Cigna, and Blue Cross Blue Shield of Tennessee are among the most active Medicare Advantage carriers in Washington County, with local hospital affiliations shaping which specific plans have the strongest specialist networks. A $0-premium plan doesn't mean free healthcare, though — you still owe copays, coinsurance, and potentially a deductible depending on the plan, and you continue paying your standard Medicare Part B premium regardless of which plan you choose.

What to check before enrolling. Confirm your specific doctors and preferred hospital are in-network and that your regular prescriptions are on the plan's formulary before enrolling in Washington County — these vary significantly between plans that otherwise look similar on paper, and a medication cheap on one plan's formulary can sit on a much higher tier with another. Some carriers also offer Special Needs Plans for people with specific chronic conditions or dual Medicare/TennCare eligibility, worth asking about if you fit one of those categories.

When you can enroll or switch. The Annual Enrollment Period runs October 15 through December 7 each year, with changes taking effect January 1, plus a separate Medicare Advantage Open Enrollment Period from January 1 through March 31 allowing one additional switch. Because plan details in Washington County change every year, comparing fresh each cycle rather than assuming last year's plan is still the best fit is worth the time.

Part D drug coverage considerations

If you take regular prescriptions, checking each Medicare Advantage plan's drug formulary in Washington County matters just as much as checking provider networks. A medication can sit on a low-cost tier with one plan and a much higher tier with another, even among plans that otherwise look similar.

Medigap as an alternative approach. Some Medicare-eligible residents of Washington County prefer Original Medicare paired with a Medigap supplement instead of Medicare Advantage, trading a monthly Medigap premium for more predictable costs and broader nationwide provider access with fewer network restrictions.

Star ratings worth checking. CMS assigns each Medicare Advantage plan a star rating from 1 to 5 based on quality and member satisfaction measures. Comparing star ratings alongside network and formulary details for plans available in Washington County gives a fuller picture than premium alone.

How plans differ beyond premium

Two $0-premium Medicare Advantage plans in Washington County can differ substantially in their out-of-pocket maximum, specialist copays, and whether they require referrals — reading past the premium line into the plan's summary of benefits is worth the extra few minutes before enrolling.

Dual-eligible residents. Residents of Washington County who qualify for both Medicare and TennCare have access to Dual Eligible Special Needs Plans, which coordinate benefits across both programs and often reduce or eliminate out-of-pocket costs entirely. Checking dual-eligible status is worth doing if your income is low enough that TennCare might apply alongside Medicare.

Local context for Washington County

Washington County's economy is anchored by East Tennessee State University and the Ballad Health hospital system, the dominant healthcare employer across the Tri-Cities region.

Johnson City Medical Center is the flagship facility within that system, the specific hospital most Washington County plans build their networks around. As a small-metro county built around Johnson City, Washington County typically has fewer competing insurer networks than Tennessee's largest metros, which can narrow plan choice somewhat. Local hospital-network affiliation is worth checking before enrolling, since a Medicare Advantage carrier's network in Washington County may or may not include Johnson City Medical Center.

How Washington County fits Tennessee's wider market. For 2026, Tennessee carriers posted one of the steepest average rate increases nationwide, about 37.5% on full-price individual premiums. Roughly 9 in 10 Tennessee Marketplace enrollees receive a premium tax credit (averaging about $772 a month) that offsets most of that jump, but anyone earning above 400% of the federal poverty level pays the full increase out of pocket.

Where Tennessee's rules diverge from most states. Since Tennessee hasn't expanded Medicaid, adults in Washington County without dependent children or a qualifying disability generally have no path to TennCare at any income. About 95,000 Tennesseans statewide are estimated to fall into that gap, almost all below the poverty line and without minor children. Children can often still get CoverKids even when a parent qualifies for nothing, and applications for both go through TennCare Connect (tenncareconnect.tn.gov) instead of HealthCare.gov.

What to have ready before requesting a quote. Don't mistake a county average for a personal prediction. In Washington County, your actual premium depends on your precise ZIP code, the ages of everyone you're covering, this year's household income, and the doctors, hospitals, and prescriptions you need in-network. Having those four details on hand makes for a fast quote conversation with a licensed Tennessee agent, who costs you nothing since carriers pay the commission.