MA Enrollment Explorer / Parent organizations / The Regents of the University of California
The Regents of the University of California: Medicare Advantage enrollment and market share
The Regents of the University of California had 11,986 Medicare Advantage members in October 2026, #98 nationally with 0.03% of all MA enrollment. It gained 4,803 members (+66.9%) since October 2025, and has enrollment in 2 states and 6 counties with 11 or more members. In the 2026 Annual Election Period (December to February) it gained 3,714 members (+50.6%). For 2027, 0 of its members are in plans that terminate and 246 in plans leaving their county, and it leaves 4 counties entirely.
12KMA members, October 2026
+66.9%change since October 2025 (+4,803)
0.03%national MA share, rank 98
1contracts with enrollment
Largest states
| State | Members | Share of state MA |
|---|---|---|
| California | 11,873 | 0.3% |
| Nevada | 11 | 0.0% |
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Los Angeles County, CA | 11,621 | +4,614 | 1.2% |
| Ventura County, CA | 165 | +100 | 0.2% |
| San Bernardino County, CA | 38 | +21 | 0.0% |
| Orange County, CA | 32 | +11 | 0.0% |
| Riverside County, CA | 17 | −1 | 0.0% |
| Clark County, NV | 11 | new | 0.0% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H4647 UCLA Health Medicare Advantage Plan | HMO/HMOPOS | n/a | 7,183 | 11,986 |
Star ratings for these contracts are in the MA Quality Dashboard.