How do Medicare Advantage plans work in Tennessee?

Tennessee Medicare Advantage plans bundle your hospital insurance, medical insurance, and additional coverages, such as prescription drug coverage, into a single private health plan. Also known as Medicare Part C, these options feature a newly updated $2,400 maximum out-of-pocket drug cap for 2027, with many plans across the state offering a $0 monthly premium.

Popular Medicare Advantage Carriers in Tennessee

Source: https://www.medicare.gov/plan-compare/ 

CMS Star Ratings are evaluated annually by the Centers for Medicare & Medicaid Services (CMS). Ratings and plan availability can vary significantly by Tennessee county.

What is a Medicare Advantage Plan in Tennessee?

Medicare Advantage plans in Tennessee—also known as Medicare Part C—serve as an all-in-one alternative to Original Medicare, bundling Part A (hospital insurance), Part B (medical insurance), and additional coverages like Part D (prescription drug coverage) into a single managed care policy. While Original Medicare only covers about 80% of Part B costs, leaving enrollees responsible for the remaining 20%, Medicare Advantage plans establish clear annual out-of-pocket maximums and may include additional benefits like routine dental, vision, and hearing coverage.

Common TN Plan Types: HMO vs. PPO

Healthcare delivery and network structures across Tennessee vary significantly between urban and rural environments:

• Health Maintenance Organization (HMO) Plans: Densely populated urban centers such as Nashville and Memphis offer highly competitive HMO networks. These plans coordinate care through concentrated health systems, providing predictable, lower out-of-pocket costs and low monthly premiums in exchange for using in-network primary care doctors and obtaining referrals for specialist visits.

• Preferred Provider Organization (PPO) Plans: In rural areas across East, Middle, and West Tennessee, PPO structures are widely utilized. PPO plans offer network flexibility, allowing enrollees to visit out-of-network specialists or regional medical hubs without a referral, preventing care disruption for those who live farther from major hospital systems.

2027 Prescription Drug Coverage Updates (MAPD)

Medicare Advantage plans with prescription drug coverage in Tennessee are known as Medicare Advantage Prescription Drug (MAPD) plans. Enrollees in these plans will see major federal policy updates to Part D coverage for 2027:

• Updated Out-of-Pocket Cap: The federal annual out-of-pocket spending limit for covered Part D prescription drugs increases from $2,100 in 2026 to $2,400 in 2027. Once you reach this annual threshold, your Medicare Advantage plan covers 100% of your covered prescription drug costs for the rest of the calendar year.

• Adjusted Part D Deductible: The maximum standard Part D deductible adjusts to $700 in 2027.

• Medicare Prescription Payment Plan (Payment Smoothing): Tennessee seniors can opt into this payment model, which allows you to spread out-of-pocket prescription drug costs into manageable monthly installments throughout the calendar year.

Plan Availability by Top Tennessee Counties

Because carrier networks, monthly costs, and additional benefits vary by ZIP code, county-level plan availability directly impacts your choices:

• Shelby County (Memphis): Offers the state's highest density of coordinated carrier plan choices, featuring low-cost HMO networks anchored by major regional hospital networks.

• Davidson County (Nashville): Features broad health system access with a variety of plan choices across both HMO and PPO coverage models.

• Knox County (Knoxville): Has a rapidly expanding regional footprint, offering competitive PPO pricing structures tailored to East Tennessee medical networks.

Disclaimer: Medicare Advantage plan availability, premiums, and provider networks in Tennessee vary by county and ZIP code. County-level descriptions are based on general Medicare market trends, population distribution, and typical rural vs. urban plan availability patterns. Actual plan options and benefits are determined by each insurance carrier and may change annually. 

2026-2027 Tennessee Medicare Enrollment Periods

To transition to a new Medicare plan or modify your existing coverage, you must do so during one of the federally regulated enrollment windows. Coverage changes are not guaranteed outside of these timelines unless you experience a qualifying life event: 

• Annual Enrollment Period (AEP) | October 15 to December 7: This is the primary fall window for any current Medicare beneficiary to switch or adjust coverage. During this time, you can transition from Original Medicare to a Medicare Advantage plan, swap between different Part C policies, or change your standalone Part D prescription drug coverage. All changes take effect on January 1.

• Medicare Advantage Open Enrollment Period (OEP) | January 1 to March 31: If you are already enrolled in a private Medicare Advantage plan on January 1, this dedicated winter timeline provides a one-time opportunity to adjust your choice. You can switch to a completely different Medicare Advantage plan or return to Original Medicare (with the option to add a standalone Part D policy).

• Special Enrollment Period (SEP) | Occurs Based on Qualifying Events: You may qualify to change your coverage outside standard enrollment timelines if you experience specific qualifying life events. Qualifying events include moving to a new county in Tennessee or newly qualifying for a Dual-Eligible Special Needs Plan (D-SNP) through state assistance. 

Compare Medicare Supplement Plans in Tennessee

For beneficiaries who prioritize network flexibility over additional routine benefits, choosing a Medigap plan to pair alongside Original Medicare may be a better fit than a Medicare Advantage plan. 

Unlike some states, Tennessee does not enforce an automatic "birthday rule" that guarantees an annual window to switch Medigap policies without medical underwriting. Because changing Medigap policies later in life may require passing health screening questions, selecting the right plan during your initial enrollment period is critical. 

Learn more about Medicare Supplement plans in Tennessee.

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