MA payer · 4 active contracts

UNITEDHEALTHCARE INSURANCE COMPANY

154,639

Total MA enrolled

447

Counties served

States served

Largest state

Top states by enrollment

1IN48,438
2WI24,610
3HI22,471
4NM21,221
5MI19,170
6MD6,112
7CA4,671
8PA2,201
9VA1,756
10FL962
11AZ445
12NJ390
13TX382
14DE353
15NC199

Top counties

by single-county enrollment

Honolulu, HI
Local PPO · contract H6824
16,490
Marion, IN
Local PPO · contract H2385
8,043
Wayne, MI
Local PPO · contract H0294
6,365
Dona Ana, NM
Local PPO · contract H0294
5,534
Santa Barbara, CA
Local PPO · contract H0294
4,640
Bernalillo, NM
Local PPO · contract H0294
4,133
Lake, IN
Local PPO · contract H2385
3,877
Hawaii, HI
Local PPO · contract H6824
3,829
Oakland, MI
Local PPO · contract H0294
3,496
Harford, MD
Local PPO · contract H1537
3,111
Allen, IN
Local PPO · contract H2385
2,842
Dane, WI
Local PPO · contract H0294
2,258
Milwaukee, WI
Local PPO · contract H0294
2,256
St. Joseph, IN
Local PPO · contract H2385
2,212
Brown, WI
Local PPO · contract H0294
1,895

Plan-type mix (enrollment)

Local PPO

154,639 enrolled

Source: CMS Monthly MA Enrollment by State/County/Contract (May 2026, abridged). Enrollment counts ≤ 10 are excluded from the source file (HIPAA suppression).