Medicare Advantage · United States · enrollment Oct 2026

Medicare Advantage, state by state: 29.9M members, 165 carriers, every county.

Name: Medicare Advantage enrollment and market share by state, carrier and county
Creator: Livmor

UnitedHealth holds 25.5% of the country’s visible Medicare Advantage members, Humana 21.4%, Aetna (CVS) 9.4%. 51.6% of Medicare beneficiaries are in a Medicare Advantage plan. The country added 877,157 members over twelve months; Illinois grew fastest at +13.0%, and Minnesota has the most members in plans that end for 20261, 315,533. One page per state and one per large carrier, rebuilt each month.

Visible members

29.9M

Oct 2026

MA penetration

51.6%

of 69.5M eligible

Carriers

165

parent organizations

Twelve months

+877,157

members, nationally

Election step

−151,041

December to January

States

one page each

Every state

Visible Medicare Advantage members, carriers, penetration, the twelve-month change, the election step and the leader. Open a state for every carrier and county in it.

State	Members	Carriers	MA penetration	Twelve months	Election step	Leader	In plans that end 20261
Alabama	559,117	8	61.5%	+3.1%	+0.6%	UnitedHealth 26.4%	8,407
Arizona	708,183	18	51.6%	+3.1%	+0.1%	UnitedHealth 36.2%	23,820
Arkansas	290,325	9	47.3%	+2.9%	+0.4%	Humana 37.7%	9,899
California	2,964,491	37	51.5%	+2.4%	−0.9%	Kaiser 36.5%	138,212
Colorado	465,479	11	52.0%	+1.5%	−1.7%	UnitedHealth 42.5%	22,267
Connecticut	338,182	9	–	+1.0%	−4.2%	Aetna (CVS) 32.2%	84,404
Delaware	66,847	8	32.6%	+3.3%	−4.9%	UnitedHealth 41.6%	1,605
District of Columbia	29,301	6	–	+0.8%	−4.5%	UnitedHealth 67.8%	906
Florida	2,818,974	23	57.3%	+2.9%	+0.2%	Humana 40.4%	306,456
Georgia	913,182	13	56.2%	+3.7%	−1.2%	Humana 35.2%	42,627
Hawaii	136,889	7	53.3%	+0.9%	+0.1%	UnitedHealth 36.0%	19,534
Idaho	178,463	7	45.8%	−6.9%	−14.7%	UnitedHealth 41.9%	50,256
Illinois	809,128	11	44.0%	+13.0%	+8.0%	Humana 37.2%	41,915
Indiana	619,200	12	51.1%	+3.6%	+0.5%	UnitedHealth 35.6%	8,424
Iowa	225,576	13	37.6%	+0.8%	−1.9%	Aetna (CVS) 34.4%	44,674
Kansas	180,230	9	33.4%	+2.7%	+1.6%	UnitedHealth 37.5%	2,274
Kentucky	407,869	10	55.5%	+3.0%	+1.0%	Humana 44.1%	11,448
Louisiana	490,035	9	57.5%	+2.2%	+0.1%	Humana 45.3%	12,865
Maine	199,832	6	58.8%	+1.2%	−3.4%	Martin's Point Health Care, Inc. 33.1%	13,135
Maryland	212,400	10	24.8%	+0.4%	−13.0%	Kaiser 28.2%	15,617
Massachusetts	484,467	13	35.6%	+10.4%	+5.5%	Point32Health, Inc. 24.0%	29,769
Michigan	968,143	16	63.5%	+7.1%	+3.0%	Corewell Health 26.6%	32,711
Minnesota	551,833	11	57.1%	−6.3%	−13.5%	Aware Integrated, Inc. 52.2%	315,533
Mississippi	282,440	10	45.2%	+3.4%	+0.7%	Humana 44.4%	4,807
Missouri	644,422	12	54.5%	+2.9%	+0.2%	UnitedHealth 41.3%	20,084
Montana	73,181	4	29.5%	+1.4%	−2.0%	Humana 74.2%	17,480
Nebraska	118,774	9	34.1%	+1.6%	+0.4%	UnitedHealth 39.4%	37,528
Nevada	307,389	14	52.0%	+3.1%	+0.9%	Humana 31.4%	27,065
New Hampshire	83,788	5	30.7%	−14.0%	−22.1%	Humana 50.0%	20,595
New Jersey	527,447	12	41.4%	+4.0%	+0.3%	UnitedHealth 33.5%	53,508
New Mexico	205,699	8	50.7%	+3.2%	+0.9%	UnitedHealth 34.2%	60,509
New York	1,837,345	22	53.6%	+2.5%	−3.6%	Healthfirst, Inc. 20.3%	197,685
North Carolina	1,096,794	14	57.9%	+4.4%	+1.6%	UnitedHealth 35.5%	17,738
North Dakota	29,591	5	35.2%	−22.3%	−26.0%	Medica Holding Company 38.1%	10,753
Ohio	1,220,976	19	56.7%	+7.0%	+3.5%	UnitedHealth 22.2%	170,529
Oklahoma	316,000	9	42.5%	+3.7%	+1.7%	UnitedHealth 40.7%	3,500
Oregon	466,507	15	53.8%	+0.7%	−1.5%	UnitedHealth 30.6%	68,520
Pennsylvania	1,399,326	17	54.4%	+2.0%	−0.9%	Aetna (CVS) 23.5%	22,746
Puerto Rico	572,929	3	85.2%	−0.2%	−1.6%	MHH Healthcare, L.P. 57.3%	0
Rhode Island	140,797	5	59.6%	+10.5%	+9.4%	Blue Cross & Blue Shield of Rhode Island 50.8%	296
South Carolina	551,257	13	46.8%	+4.9%	+0.5%	Humana 39.3%	734
South Dakota	44,159	5	35.1%	−1.3%	−9.2%	Medica Holding Company 40.3%	14,917
Tennessee	749,994	12	53.6%	+2.6%	+0.7%	BlueCross BlueShield of Tennessee 28.1%	12,316
Texas	2,268,310	23	54.9%	+4.4%	+1.2%	UnitedHealth 43.3%	174,021
Utah	259,204	9	55.2%	+4.6%	+0.6%	UnitedHealth 47.0%	22,693
Vermont	7,805	1	12.2%	−78.7%	−80.7%	Humana 100.0%	0
Virginia	598,369	10	39.6%	+3.4%	−1.4%	Humana 37.4%	6,781
Washington	667,271	14	49.6%	+2.4%	−0.3%	UnitedHealth 48.0%	143,260
West Virginia	174,307	8	56.6%	+4.3%	+1.7%	Humana 40.5%	527
Wisconsin	653,879	15	57.3%	+0.4%	−2.4%	UnitedHealth 33.0%	36,675
Wyoming	15,654	3	14.8%	−26.0%	−34.0%	UnitedHealth 45.8%	6,601

The largest carriers

Every parent organization with 25,000 or more visible members, by members nationally, with the states it sells in and leads. Open a carrier for its share and rank in each state.

#	Carrier	Members	National share	States	States led
1	UnitedHealthUnitedHealth Group, Inc.	7,636,987	25.5%	49	22
2	HumanaHumana Inc.	6,401,700	21.4%	47	14
3	Aetna (CVS)CVS Health Corporation	2,801,492	9.4%	43	3
4	ElevanceElevance Health, Inc.	1,499,194	5.0%	24	0
5	KaiserKaiser Foundation Health Plan, Inc.	1,488,199	5.0%	11	2
6	CenteneCentene Corporation	882,585	2.9%	32	0
7	Health Care Service Corporation	779,258	2.6%	31	0
8	DevotedDevoted Health, Inc.	529,604	1.8%	29	0
9	SCAN Group	460,190	1.5%	6	0
10	Healthfirst, Inc.	373,795	1.2%	3	1
11	MHH Healthcare, L.P.	345,897	1.2%	2	1
12	Highmark Health	317,631	1.1%	4	0
13	Alignment Healthcare USA, LLC	298,782	1.0%	5	0
14	Lifetime Healthcare, Inc.	296,119	1.0%	1	0
15	Aware Integrated, Inc.	288,109	1.0%	1	1
16	Corewell Health	257,090	0.9%	1	1
17	UPMC Health System	220,192	0.7%	2	0
18	MolinaMolina Healthcare, Inc.	219,046	0.7%	19	0
19	BlueCross BlueShield of Tennessee	215,536	0.7%	2	1
20	Blue Cross Blue Shield of Michigan Mutual Ins. Co.	210,948	0.7%	5	0
21	Guidewell Mutual Holding Corporation	202,572	0.7%	2	0
22	CuraCor Solutions Corp.	181,537	0.6%	2	0
23	Clover Health Holdings, Inc.	157,445	0.5%	5	0
24	Independence Health Group, Inc.	143,390	0.5%	6	0
25	Point32Health, Inc.	139,247	0.5%	2	1
26	Medica Holding Company	137,335	0.5%	6	2
27	Network Health, Inc.	131,518	0.4%	1	0
28	BlueCross BlueShield of Alabama	118,635	0.4%	2	0
29	Risant Health, Inc.	118,012	0.4%	2	0
30	Henry Ford Health System	107,561	0.4%	1	0
31	Trinity Health Corporation	99,204	0.3%	5	0
32	Sanford Health	91,903	0.3%	6	0
33	MEDICAL MUTUAL OF OHIO	85,769	0.3%	2	0
34	CareSource	85,103	0.3%	8	0
35	Blue Cross and Blue Shield of Massachusetts, Inc.	83,706	0.3%	1	0
36	California Physicians' Service	75,521	0.3%	1	0
37	Visiting Nurse Service of New York	73,307	0.2%	1	0
38	Blue Cross & Blue Shield of Rhode Island	71,530	0.2%	1	1
39	Horizon Mutual Holdings, Inc	70,459	0.2%	1	0
40	Intermountain Health Care, Inc.	66,903	0.2%	3	0
41	Martin's Point Health Care, Inc.	66,066	0.2%	1	1
42	CambiaCambia Health Solutions, Inc.	65,210	0.2%	3	0
43	Lumeris Group Holdings Corporation	61,059	0.2%	5	0
44	Allina Health and Aetna Insurance Holding Company	56,708	0.2%	1	0
45	PacificSource	54,669	0.2%	3	0
46	HealthPartners, Inc.	54,500	0.2%	2	0
47	Astiva Health Holdings Incorporated	54,175	0.2%	1	0
48	Clever Care Health Plan, Inc.	53,392	0.2%	1	0
49	Imperial Health Plan of California	53,167	0.2%	3	0
50	ProvidenceProvidence St Joseph Health	52,835	0.2%	3	0
51	Triton Health Systems, L.L.C.	51,235	0.2%	1	0
52	Universal Health Services, Inc.	51,071	0.2%	3	0
53	BlueCross BlueShield of South Carolina (BCBSSC)	49,286	0.2%	1	0
54	CAPITAL BLUE CROSS	48,437	0.2%	1	0
55	Baylor Scott & White Health	47,474	0.2%	1	0
56	Blue Cross Blue Shield of Arizona	47,294	0.2%	1	0
57	Zing Health Consolidator, Inc	45,096	0.2%	6	0
58	CareFirst, Inc.	44,428	0.1%	2	0
59	MVP Health Care, Inc.	44,032	0.1%	1	0
60	Presbyterian Healthcare Services	42,624	0.1%	1	0
61	LMC Family Holdings, LLC	40,574	0.1%	1	0
62	Louisiana Health Service & Indemnity Company	39,616	0.1%	1	0
63	INLAND EMPIRE HEALTH PLAN	38,265	0.1%	1	0
64	Health First Shared Services, Inc.	37,123	0.1%	1	0
65	Gemstone Holdings, Inc.	36,083	0.1%	1	0
66	St Francis Health System & St John Health System	35,898	0.1%	1	0
67	General Catalyst Group Management Holdings LP	33,966	0.1%	1	0
68	ATRIOATRIO Health Plans	33,530	0.1%	1	0
69	Hawaii Medical Service Association	31,777	0.1%	1	0
70	Thomas Jefferson University	31,022	0.1%	2	0
71	Local Initiative Health Authority for LA County	30,632	0.1%	1	0
72	Independent Health Association, Inc.	28,517	0.1%	1	0
73	Blue Cross Blue Shield of Nebraska	27,927	0.1%	1	0
74	DOCTORS HEALTHCARE PLANS, INC.	27,103	0.1%	1	0
75	Elderplan, Inc.	26,966	0.1%	1	0

Carrier Command · for Medicare Advantage plans

The read on every carrier in every state is in Carrier Command.

Carrier Command is the product behind these pages: the monthly position page per carrier per state with risk, rebate, Stars levers, the election-period forecast, exits, networks and the written read. Launching for Medicare Advantage plans.

Request early access See Carrier Command

What these pages are

A public, monthly read of the Medicare Advantage market: who holds each state, how the shares moved over twelve months and at the election period, which carrier leads each county, what the coming contract year does to each carrier’s plans, and the design of the plans on sale. Every figure is a count or a share a reader can check, from public CMS data, rebuilt when a new month posts.

The pages are free and open. The analysis on top of them, risk and rebate against the market, the Stars levers and next year’s cut points, the forecast, networks and the written read, is Carrier Command, Livmor’s product for Medicare Advantage plans. Medicare agents and agencies use LivmorIQ.

How these numbers are made

Members are visible members: CMS suppresses any plan-county cell of ten or fewer, so small counties undercount. Market share excludes employer group plans.
Enrollment is Oct 2026; the twelve-month change and the election step come from the monthly files on record. Penetration is Medicare Advantage members as a share of Medicare beneficiaries; two states have no penetration figure and are shown without one.
Every figure comes from public CMS data as Livmor reads it, and the page is rebuilt when a new month posts. Livmor Carrier Command, public CMS data.