Free tool · public CMS data
Tennessee Medicare Advantage market share
In September 2026, 806,862 Tennessee Medicare beneficiaries were enrolled in a Medicare Advantage plan across 96 parent carriers and 95 counties, led by UnitedHealth Group, Inc. with 28.4% of counted enrollment.
Data month
September 2026
Advantage enrollees
806,862
+2.2% vs September 2025
Parent carriers
96
Advantage penetration
52.4%
CMS Medicare Monthly Enrollment, 2024
Carriers in Tennessee
CMS Monthly Enrollment by Contract/Plan/State/County (CPSC) · September 2026
| # | Parent organisation | Enrollees | Share | Counties | vs September 2025 |
|---|---|---|---|---|---|
| 1 | UnitedHealth Group, Inc. | 229,065 | 28.4% | 95 | -4.9% |
| 2 | BlueCross BlueShield of Tennessee | 213,266 | 26.4% | 95 | +7.2% |
| 3 | Humana Inc. | 205,654 | 25.5% | 95 | +9.0% |
| 4 | Health Care Service Corporation | 85,383 | 10.6% | 95 | +0.1% |
| 5 | Elevance Health, Inc. | 28,364 | 3.5% | 95 | -9.5% |
| 6 | CVS Health Corporation | 17,713 | 2.2% | 95 | -5.9% |
| 7 | Devoted Health, Inc. | 9,366 | 1.2% | 77 | +53.0% |
| 8 | Centene Corporation | 8,689 | 1.1% | 95 | -13.0% |
| 9 | Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 4,176 | 0.5% | 95 | -4.2% |
| 10 | Zing Health Consolidator, Inc | 2,196 | 0.3% | 11 | +40.6% |
| 11 | Highmark Health | 1,745 | 0.2% | 95 | -3.9% |
| 12 | Missouri Healthcare Advisors, LLC | 764 | 0.1% | 48 | -2.8% |
| 13 | Mitchell Family Office | 249 | 0.0% | 55 | -44.5% |
| 14 | BrightSpring Health Services, Inc. | 201 | 0.0% | 49 | +5.8% |
| 15 | California Physicians' Service | 31 | 0.0% | 95 | +40.9% |
| 16 | Alignment Healthcare USA, LLC | 0 | 0.0% | 95 | — |
| 17 | Allina Health and Aetna Insurance Holding Company | 0 | 0.0% | 95 | — |
| 18 | Astiva Health Holdings Incorporated | 0 | 0.0% | 1 | — |
| 19 | Athena Healthcare Holdings, LLC | 0 | 0.0% | 2 | — |
| 20 | ATRIO Health Plans | 0 | 0.0% | 3 | — |
| 21 | Aultman Health Foundation | 0 | 0.0% | 95 | — |
| 22 | Aware Integrated, Inc. | 0 | 0.0% | 95 | — |
| 23 | BayCare Health System, Inc. | 0 | 0.0% | 2 | — |
| 24 | Baystate Health, Inc. | 0 | 0.0% | 95 | — |
| 25 | Blue Cross & Blue Shield of Rhode Island | 0 | 0.0% | 95 | — |
| 26 | Blue Cross and Blue Shield of Massachusetts, Inc. | 0 | 0.0% | 95 | — |
| 27 | Blue Cross Blue Shield of Arizona | 0 | 0.0% | 5 | — |
| 28 | Blue Cross Blue Shield of Kansas | 0 | 0.0% | 95 | — |
| 29 | Blue Cross Blue Shield of Nebraska | 0 | 0.0% | 95 | — |
| 30 | BlueCross BlueShield of Alabama | 0 | 0.0% | 95 | — |
| 31 | BlueCross BlueShield of South Carolina (BCBSSC) | 0 | 0.0% | 95 | — |
| 32 | Cambia Health Solutions, Inc. | 0 | 0.0% | 95 | — |
| 33 | CAPITAL BLUE CROSS | 0 | 0.0% | 95 | — |
| 34 | CareFirst, Inc. | 0 | 0.0% | 95 | — |
| 35 | CareSource | 0 | 0.0% | 9 | — |
| 36 | Champion Health Plans-USA, LLC. | 0 | 0.0% | 1 | — |
| 37 | CHRISTUS Health | 0 | 0.0% | 1 | — |
| 38 | Clover Health Holdings, Inc. | 0 | 0.0% | 1 | — |
| 39 | Community Health Group | 0 | 0.0% | 1 | — |
| 40 | Corewell Health | 0 | 0.0% | 95 | — |
| 41 | CuraCor Solutions Corp. | 0 | 0.0% | 95 | — |
| 42 | Curana Health Holdings, LLC | 0 | 0.0% | 1 | — |
| 43 | EmblemHealth, Inc. | 0 | 0.0% | 95 | — |
| 44 | Fallon Community Health Plan, Inc. | 0 | 0.0% | 95 | — |
| 45 | Fenyx Health Holdings, Inc. | 0 | 0.0% | 95 | — |
| 46 | Gemstone Holdings, Inc. | 0 | 0.0% | 1 | — |
| 47 | General Catalyst Group Management Holdings LP | 0 | 0.0% | 95 | — |
| 48 | Guidewell Mutual Holding Corporation | 0 | 0.0% | 95 | — |
| 49 | Hawaii Medical Service Association | 0 | 0.0% | 95 | — |
| 50 | Health First Shared Services, Inc. | 0 | 0.0% | 1 | — |
| 51 | Healthfirst, Inc. | 0 | 0.0% | 95 | — |
| 52 | HealthPartners, Inc. | 0 | 0.0% | 95 | — |
| 53 | Henry Ford Health System | 0 | 0.0% | 95 | — |
| 54 | Horizon Mutual Holdings, Inc | 0 | 0.0% | 95 | — |
| 55 | Imperial Health Plan of California | 0 | 0.0% | 4 | — |
| 56 | Independence Health Group, Inc. | 0 | 0.0% | 95 | — |
| 57 | Independent Health Association, Inc. | 0 | 0.0% | 95 | — |
| 58 | Kaiser Foundation Health Plan, Inc. | 0 | 0.0% | 24 | — |
| 59 | LifeBridge Health, Inc. | 0 | 0.0% | 2 | — |
| 60 | Lifetime Healthcare, Inc. | 0 | 0.0% | 95 | — |
| 61 | LMC Family Holdings, LLC | 0 | 0.0% | 1 | — |
| 62 | Local Initiative Health Authority for LA County | 0 | 0.0% | 1 | — |
| 63 | Longevity Health Founders, LLC | 0 | 0.0% | 2 | — |
| 64 | Louisiana Health Service & Indemnity Company | 0 | 0.0% | 95 | — |
| 65 | Lumeris Group Holdings Corporation | 0 | 0.0% | 2 | — |
| 66 | Martin's Point Health Care, Inc. | 0 | 0.0% | 95 | — |
| 67 | Mass General Brigham Incorporated | 0 | 0.0% | 1 | — |
| 68 | Medica Holding Company | 0 | 0.0% | 95 | — |
| 69 | MEDICAL MUTUAL OF OHIO | 0 | 0.0% | 95 | — |
| 70 | Memorial Hermann Health System | 0 | 0.0% | 1 | — |
| 71 | MHH Healthcare, L.P. | 0 | 0.0% | 2 | — |
| 72 | Molina Healthcare, Inc. | 0 | 0.0% | 7 | — |
| 73 | MVP Health Care, Inc. | 0 | 0.0% | 95 | — |
| 74 | NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND | 0 | 0.0% | 1 | — |
| 75 | Network Health, Inc. | 0 | 0.0% | 95 | — |
| 76 | Orange County Health Authority | 0 | 0.0% | 1 | — |
| 77 | PacificSource | 0 | 0.0% | 1 | — |
| 78 | Presbyterian Healthcare Services | 0 | 0.0% | 2 | — |
| 79 | Risant Health, Inc. | 0 | 0.0% | 2 | — |
| 80 | Sanford Health | 0 | 0.0% | 2 | — |
| 81 | SANTA CLARA COUNTY HEALTH AUTHORITY | 0 | 0.0% | 1 | — |
| 82 | SCAN Group | 0 | 0.0% | 14 | — |
| 83 | Select Founders, LLC | 0 | 0.0% | 1 | — |
| 84 | Sharp Healthcare | 0 | 0.0% | 1 | — |
| 85 | SIHO Holding, Inc. | 0 | 0.0% | 1 | — |
| 86 | SNP Holdings, LLC | 0 | 0.0% | 1 | — |
| 87 | The Health Plan of West Virginia, Inc. | 0 | 0.0% | 95 | — |
| 88 | The Regents of the University of California | 0 | 0.0% | 1 | — |
| 89 | Thomas Jefferson University | 0 | 0.0% | 2 | — |
| 90 | Trinity Health Corporation | 0 | 0.0% | 4 | — |
| 91 | Triton Health Systems, L.L.C. | 0 | 0.0% | 5 | — |
| 92 | Ultimate Healthcare Holdings, LLC | 0 | 0.0% | 1 | — |
| 93 | UNICO Services, Inc. | 0 | 0.0% | 1 | — |
| 94 | Universal Health Services, Inc. | 0 | 0.0% | 3 | — |
| 95 | UPMC Health System | 0 | 0.0% | 95 | — |
| 96 | USAble Mutual Insurance Company | 0 | 0.0% | 95 | — |
County view
Leading carrier and Advantage enrollment in each Tennessee county. Penetration is from CMS Medicare Monthly Enrollment, 2024.
| County | Advantage enrollees | Leading carrier | Leader share | Carriers | Penetration |
|---|---|---|---|---|---|
| Shelby | 81,183 | Humana Inc. | 28.8% | 59 | 46.3% |
| Davidson | 58,899 | Health Care Service Corporation | 32.2% | 58 | 55.9% |
| Knox | 53,228 | Humana Inc. | 54.5% | 59 | 52.9% |
| Hamilton | 46,536 | BlueCross BlueShield of Tennessee | 49.9% | 60 | 54.2% |
| Sullivan | 30,819 | BlueCross BlueShield of Tennessee | 40.8% | 53 | 67.2% |
| Rutherford | 27,500 | BlueCross BlueShield of Tennessee | 28.8% | 59 | 51.3% |
| Sumner | 22,883 | Health Care Service Corporation | 39.4% | 59 | 54.6% |
| Washington | 20,905 | UnitedHealth Group, Inc. | 48.1% | 54 | 59.5% |
| Blount | 19,928 | Humana Inc. | 52.0% | 55 | 55.7% |
| Williamson | 19,045 | Health Care Service Corporation | 32.2% | 63 | 42.7% |
| Wilson | 16,647 | Health Care Service Corporation | 38.8% | 54 | 51.7% |
| Bradley | 14,990 | BlueCross BlueShield of Tennessee | 40.3% | 51 | 56.7% |
| Montgomery | 14,603 | UnitedHealth Group, Inc. | 27.6% | 56 | 41.6% |
| Sevier | 14,475 | Humana Inc. | 49.9% | 54 | 56.8% |
| Cumberland | 13,280 | BlueCross BlueShield of Tennessee | 43.6% | 54 | 50.6% |
| Greene | 12,848 | Humana Inc. | 40.7% | 50 | 59.6% |
| Hawkins | 12,353 | BlueCross BlueShield of Tennessee | 49.1% | 52 | 70.9% |
| Maury | 11,883 | UnitedHealth Group, Inc. | 31.8% | 56 | 47.4% |
| Anderson | 10,553 | Humana Inc. | 51.7% | 51 | 53.1% |
| Madison | 10,518 | UnitedHealth Group, Inc. | 32.7% | 50 | 44.6% |
| Loudon | 10,486 | Humana Inc. | 51.1% | 51 | 50.6% |
| Carter | 10,249 | UnitedHealth Group, Inc. | 61.7% | 52 | 66.2% |
| Hamblen | 9,483 | Humana Inc. | 36.2% | 50 | 59.4% |
| Jefferson | 9,127 | Humana Inc. | 46.5% | 53 | 58.6% |
| Robertson | 9,025 | Health Care Service Corporation | 32.5% | 53 | 56.7% |
| Putnam | 8,794 | BlueCross BlueShield of Tennessee | 40.5% | 54 | 45.1% |
| Roane | 8,789 | Humana Inc. | 49.8% | 53 | 54.5% |
| Monroe | 8,247 | UnitedHealth Group, Inc. | 38.9% | 52 | 58.5% |
| McMinn | 8,088 | UnitedHealth Group, Inc. | 35.1% | 50 | 53.0% |
| Cocke | 7,382 | UnitedHealth Group, Inc. | 46.9% | 50 | 64.3% |
| Coffee | 6,918 | BlueCross BlueShield of Tennessee | 31.7% | 51 | 48.6% |
| Campbell | 6,852 | Humana Inc. | 43.4% | 52 | 66.3% |
| Dickson | 6,837 | BlueCross BlueShield of Tennessee | 35.9% | 50 | 54.0% |
| Claiborne | 6,074 | UnitedHealth Group, Inc. | 43.8% | 50 | 66.6% |
| Gibson | 5,475 | UnitedHealth Group, Inc. | 35.6% | 51 | 43.2% |
| Tipton | 5,426 | BlueCross BlueShield of Tennessee | 28.8% | 51 | 41.6% |
| Franklin | 5,345 | BlueCross BlueShield of Tennessee | 37.4% | 50 | 46.7% |
| Cheatham | 5,249 | Health Care Service Corporation | 33.1% | 52 | 57.5% |
| Bedford | 5,238 | UnitedHealth Group, Inc. | 36.9% | 51 | 51.6% |
| Warren | 5,148 | UnitedHealth Group, Inc. | 34.0% | 51 | 49.0% |
| Lincoln | 4,905 | BlueCross BlueShield of Tennessee | 55.9% | 49 | 53.1% |
| Rhea | 4,876 | BlueCross BlueShield of Tennessee | 37.8% | 51 | 54.2% |
| Lawrence | 4,681 | BlueCross BlueShield of Tennessee | 32.6% | 54 | 42.6% |
| Grainger | 4,542 | Humana Inc. | 45.2% | 51 | 64.9% |
| Fayette | 4,500 | Humana Inc. | 30.5% | 52 | 38.3% |
| Marion | 4,458 | BlueCross BlueShield of Tennessee | 46.7% | 53 | 56.6% |
| Henry | 4,232 | BlueCross BlueShield of Tennessee | 40.8% | 49 | 42.7% |
| Marshall | 4,069 | UnitedHealth Group, Inc. | 28.8% | 53 | 52.6% |
| White | 3,978 | UnitedHealth Group, Inc. | 37.0% | 52 | 50.1% |
| Dyer | 3,937 | BlueCross BlueShield of Tennessee | 43.6% | 50 | 46.2% |
| Henderson | 3,682 | BlueCross BlueShield of Tennessee | 53.8% | 51 | 53.8% |
| Obion | 3,617 | Highmark Health | 28.2% | 49 | 47.3% |
| Unicoi | 3,497 | UnitedHealth Group, Inc. | 66.5% | 50 | 65.6% |
| Giles | 3,444 | BlueCross BlueShield of Tennessee | 31.1% | 51 | 43.3% |
| Johnson | 3,414 | UnitedHealth Group, Inc. | 65.6% | 52 | 62.3% |
| Scott | 3,405 | UnitedHealth Group, Inc. | 59.8% | 50 | 64.1% |
| Hardeman | 3,297 | UnitedHealth Group, Inc. | 33.3% | 51 | 51.8% |
| Union | 3,256 | Humana Inc. | 57.5% | 49 | 66.3% |
| Carroll | 3,252 | BlueCross BlueShield of Tennessee | 40.6% | 50 | 43.1% |
| Hickman | 3,186 | BlueCross BlueShield of Tennessee | 33.1% | 51 | 56.0% |
| Morgan | 3,105 | Humana Inc. | 48.1% | 51 | 63.4% |
| Hardin | 3,053 | UnitedHealth Group, Inc. | 34.7% | 51 | 39.1% |
| Weakley | 3,026 | BlueCross BlueShield of Tennessee | 32.6% | 49 | 40.2% |
| McNairy | 3,004 | BlueCross BlueShield of Tennessee | 36.9% | 50 | 42.8% |
| DeKalb | 2,978 | Health Care Service Corporation | 33.8% | 52 | 58.6% |
| Sequatchie | 2,956 | BlueCross BlueShield of Tennessee | 42.7% | 51 | 58.0% |
| Lauderdale | 2,916 | UnitedHealth Group, Inc. | 34.4% | 50 | 51.5% |
| Fentress | 2,892 | UnitedHealth Group, Inc. | 37.1% | 53 | 45.4% |
| Overton | 2,822 | BlueCross BlueShield of Tennessee | 38.8% | 50 | 46.0% |
| Polk | 2,813 | BlueCross BlueShield of Tennessee | 37.8% | 52 | 54.3% |
| Macon | 2,672 | BlueCross BlueShield of Tennessee | 35.4% | 50 | 50.3% |
| Grundy | 2,419 | BlueCross BlueShield of Tennessee | 45.4% | 52 | 60.5% |
| Haywood | 2,341 | UnitedHealth Group, Inc. | 40.6% | 51 | 54.1% |
| Benton | 2,268 | BlueCross BlueShield of Tennessee | 37.9% | 50 | 47.7% |
| Meigs | 2,254 | UnitedHealth Group, Inc. | 37.1% | 51 | 56.6% |
| Smith | 2,062 | UnitedHealth Group, Inc. | 28.2% | 51 | 47.2% |
| Humphreys | 2,004 | BlueCross BlueShield of Tennessee | 32.2% | 51 | 43.6% |
| Bledsoe | 1,949 | BlueCross BlueShield of Tennessee | 55.4% | 51 | 55.8% |
| Wayne | 1,854 | BlueCross BlueShield of Tennessee | 47.6% | 49 | 49.9% |
| Cannon | 1,689 | BlueCross BlueShield of Tennessee | 35.7% | 49 | 50.9% |
| Chester | 1,683 | BlueCross BlueShield of Tennessee | 40.2% | 49 | 45.2% |
| Decatur | 1,606 | BlueCross BlueShield of Tennessee | 44.3% | 49 | 47.0% |
| Lewis | 1,484 | UnitedHealth Group, Inc. | 35.3% | 52 | 49.9% |
| Jackson | 1,438 | BlueCross BlueShield of Tennessee | 37.9% | 50 | 48.1% |
| Stewart | 1,380 | UnitedHealth Group, Inc. | 31.2% | 51 | 41.2% |
| Crockett | 1,342 | UnitedHealth Group, Inc. | 36.7% | 49 | 41.3% |
| Hancock | 1,127 | UnitedHealth Group, Inc. | 51.2% | 52 | 63.7% |
| Perry | 1,089 | BlueCross BlueShield of Tennessee | 45.7% | 50 | 52.0% |
| Trousdale | 936 | Health Care Service Corporation | 34.2% | 50 | 53.0% |
| Houston | 908 | UnitedHealth Group, Inc. | 32.9% | 52 | 44.3% |
| Clay | 856 | UnitedHealth Group, Inc. | 39.8% | 50 | 43.5% |
| Van Buren | 750 | UnitedHealth Group, Inc. | 38.4% | 51 | 45.7% |
| Lake | 592 | UnitedHealth Group, Inc. | 37.7% | 50 | 45.0% |
| Pickett | 552 | UnitedHealth Group, Inc. | 43.7% | 49 | 41.2% |
| Moore | 506 | BlueCross BlueShield of Tennessee | 39.5% | 51 | 38.8% |
What is missing
CMS suppresses any plan-county cell with fewer than 11 enrollees. Those enrollees are missing from these counts, so every figure is a floor, not an exact total.
What is counted
Counts cover Medicare Advantage contracts only (Local CCP, Regional CCP, PFFS and MSA). Standalone Part D drug plans, cost plans, HCPP and PACE contracts are excluded.
Source: CMS Monthly Enrollment by Contract/Plan/State/County (CPSC).