Medicare Advantage

Irvine Medicare Advantage for 2027: how networks, referrals and travel differ by plan type

Orange County has 111 Medicare Advantage plans for 2027. Compared with 2026, 21 plans are not coming back, 28 are new, and 51 continuing plans changed in some way you should check before December 7, 19 of them under a new name. This guide covers what those numbers mean for Irvine, not which plan to pick.

IRVINE, Calif. — As the Annual Enrollment Period opens Oct. 15, 2026, Irvine residents sorting through next year's Medicare Advantage choices will see a lineup that leans heavily toward HMO-style plans. Irvine is in Orange County, where 111 Medicare Advantage plans from 16 carriers are offered for 2027. By plan type, that breaks down to 84 HMOs, 23 HMO-POS plans and 4 PPOs. The type you pick shapes which doctors you can see, whether you need a referral, and what happens if you need care outside the plan's network.

What do HMO, HMO-POS, PPO and PFFS mean for Medicare Advantage?

Each label is a set of rules about networks and referrals. An HMO (Health Maintenance Organization) uses a defined local network and generally asks you to pick a primary care doctor; care from outside the network is typically not covered except for emergencies. An HMO-POS (Point of Service) is an HMO with a limited "point of service" option that lets you go outside the network for certain services, usually at a higher cost. A PPO (Preferred Provider Organization) covers both in-network and out-of-network providers, though you pay less in-network and usually do not need a referral. A PFFS (Private Fee-for-Service) plan lets you see any Medicare provider who agrees to the plan's payment terms; PFFS plans are not offered in Orange County for 2027.

None of these types is "better" — the right fit depends on which doctors and hospitals you use, whether your specialists require referrals, and how often you are away from home.

How do Orange County's 2027 plans split by type?

Of the 111 Medicare Advantage plans available in Orange County for 2027, 84 are HMOs, 23 are HMO-POS plans and 4 are PPOs. Counting HMO and HMO-POS together, 107 of the 111 plans are HMO-family. That is consistent with how Southern California's Medicare Advantage market has long looked: dominated by local HMO networks, with a smaller PPO slice for people who want broader out-of-network flexibility.

The full roster, with each plan and its type, is in the table below.

Which carriers offer HMO plans in Orange County for 2027?

Fifteen carriers offer HMO plans in Orange County for 2027: Aetna (CVS Health), Align Senior Care, Alignment Health Plan, Astiva Health, Blue Shield of California, CalOptima Health OneCare, Centene (WellCare), Champion Heath Plan, Clever Care Health Plan, Elevance Health (Anthem), Humana, Imperial Health Plan of California, Inc., Kaiser Permanente, SCAN Health Plan and UnitedHealthcare.

An HMO can be a strong match when your doctors and hospitals are already in one connected system in Orange County, and when you are comfortable going through a primary care doctor for specialist referrals. Many Special Needs Plans in the county — for people with specific chronic conditions, those who are dually eligible for Medicare and Medi-Cal, or those in institutional care — are built on the HMO chassis.

Which carriers offer HMO-POS plans, and how does that differ from a straight HMO?

Five carriers offer HMO-POS plans in Orange County for 2027: Aetna (CVS Health), Champion Heath Plan, Elevance Health (Anthem), UnitedHealthcare and VillageHealth.

An HMO-POS still runs on a network, but the "point of service" piece lets you go outside the network for specific covered services, often at a higher cost share. The exact services and the amounts you pay vary plan by plan — those details live in each plan's Evidence of Coverage, not here. For someone who mostly stays in-network but occasionally wants the option to see an outside provider, an HMO-POS can be a middle ground between an HMO and a PPO.

Which carriers offer PPO plans in Orange County for 2027?

Humana is the only carrier offering PPO plans in Orange County for 2027, according to the CMS Landscape file. Those four PPOs are the entirety of the county's PPO shelf next year.

A PPO is often the choice for people who split time between states, travel often, or want to use providers outside a single network without a referral. Out-of-network care is covered, but at a higher cost than in-network care. If broad flexibility matters to you, it is worth checking whether the doctors and hospitals you actually use are in a given PPO's network — PPOs still have networks, they just do not lock you into them.

What is changing in Orange County for 2027, and what should Irvine residents do?

For 2027, 21 plans are not returning in Orange County, 28 are new, and 19 have been renamed. If your current plan is renewing, your Annual Notice of Change (ANOC) — mailed in September — spells out exactly what is different for 2027, from cost shares to the provider network. If you do nothing, and your plan is offered again next year, you stay in it with those updated terms.

The Annual Enrollment Period runs Oct. 15 – Dec. 7, 2026, and any change takes effect Jan. 1, 2027. If you want to switch types — say, from an HMO to a PPO, or vice versa — that is the window. There is also a Medicare Advantage Open Enrollment Period from Jan. 1 – March 31, 2027, when people already in a Medicare Advantage plan can make one change.

A few program-level numbers worth knowing for 2027: the Part D out-of-pocket cap rises to $2,400 (from $2,100 in 2026), and the Part D maximum deductible is $700 (from $615 in 2026). CMS typically publishes the 2027 Part B standard premium, deductible and IRMAA income brackets later in the fall.