Health Net and Kaiser Permanente are among the most-searched-by-name insurers for Medicare Advantage in Los Angeles and San Diego, but they work very differently. This guide compares them objectively, without recommending one over the other, because the best option depends on your current doctors, your medications, your budget, and the county where you live, not on which insurer is more well-known. Both change their plan lineup, networks, and benefits every year, and those details vary from one county to another, so treat this guide as a starting point, not the final comparison for your specific ZIP code.
Who each insurer is and how it is organized
Health Net is a brand of Centene Corporation, one of the largest health insurers in the country, and has had a presence in California for decades, including Medi-Cal plans in several counties in addition to Medicare Advantage. Its network is made up of independent contracted hospitals and doctors, which tends to translate into more clinic and hospital-system variety within the same plan, especially in urban parts of Los Angeles and San Diego.
Kaiser Permanente is an integrated health system: it owns its own hospitals, clinics, and pharmacies, and almost all of its Medicare Advantage plans are HMOs within that closed network. This tends to appeal to people who already receive care within the Kaiser system and value having medical history, appointments, and lab results connected in one place, rather than coordinating among independent providers.
Hospital and doctor networks
Health Net's network is made up of independent hospitals and medical groups contracted by county, which can mean more hospital-system options near where you live, but it also requires carefully verifying whether your specific doctor participates in the exact plan you are considering, since different Health Net plans can assign you to different medical groups (IPAs). Kaiser Permanente, on the other hand, generally requires you to use doctors, hospitals, labs, and pharmacies within its own network; if your current doctor is not part of Kaiser, you would need to switch to keep coverage.
No network is automatically broader in your specific ZIP code: the only reliable step is verifying whether your primary care doctor and current specialists are in the network of the exact plan you are considering, not just whether they 'accept Health Net' in general.
Availability, cost, benefits, and eligibility vary by person, product, contract, and insurance company, as well as by your service area. Guarantees are subject to the claims-paying ability of the issuing insurance company. Karla Arámburo is not affiliated with or endorsed by Medicare or the federal government.
HMO vs. PPO with each insurer
Health Net offers both HMO and PPO plans in Southern California, with a mix that changes by county: some areas have mostly HMO options, while others have more PPO availability. Kaiser Permanente, by contrast, is almost exclusively HMO; the vast majority of its Medicare Advantage plans require choosing a primary care doctor within the Kaiser system and getting referrals to see specialists.
If you value the flexibility of seeing specialists outside a closed network, or split your time between Southern California and another part of the country, a Health Net PPO plan usually gives more room than any Kaiser Permanente plan. Our HMO vs. PPO guide explains the differences in more detail before comparing specific insurers.
Costs, Medi-Cal dual eligibility, and add-on benefits
Both insurers offer plans with monthly premiums starting at $0 in most Southern California counties, and the real cost depends more on copays for office visits, specialists, and hospital stays, plus the annual out-of-pocket maximum, than on the advertised premium. Health Net also administers Medi-Cal plans in several counties, and some of its Dual Eligible Special Needs Plans (D-SNPs) coordinate Medicare and Medi-Cal together; Kaiser Permanente also offers some D-SNP plans, but it is worth confirming availability in your specific county.
Many plans from both insurers include dental, vision, and hearing benefits, plus an OTC/flex card for over-the-counter products. The exact amount, the dental provider network, and participating stores vary by specific plan and county, not by insurer in general. To understand these benefits regardless of insurer, review our dental, vision, and hearing benefits guide and our OTC/flex card guide.
County availability across Southern California
In Los Angeles County, Health Net has one of its broadest presences, with multiple contracted hospital systems and several dual-eligible plans, while Kaiser Permanente operates several of its own integrated medical centers. In San Diego County, both insurers compete directly, with Health Net standing out for its broader network of independent providers and Kaiser Permanente for coordinated care within its system. In Orange County and Riverside County and the Inland Empire, Kaiser Permanente's coverage can be more geographically limited outside the areas where it operates its own centers, while Health Net's network tends to extend to more cities within each county. Exact availability changes by ZIP code and by year, so it should always be confirmed for your specific address. I work with families in cities such as Los Angeles, San Diego, Chula Vista and Anaheim, reviewing in each case which Health Net and Kaiser Permanente plans are actually available in their exact ZIP code.
Quick comparison table
| Aspect | Health Net | Kaiser Permanente |
|---|---|---|
| Network type | Contracted network of independent hospitals and doctors | Own integrated system, almost all HMO |
| Plan type | HMO and PPO, mix varies by county | Almost exclusively HMO |
| Parent company | Centene Corporation | Kaiser Foundation Health Plan |
| Best for | Those who want more hospital variety or have Medi-Cal with Health Net | Those already in the Kaiser system |
No row in this table is a general recommendation; it is a starting point for asking the right questions. To understand the rest of Medicare Advantage's structure before comparing specific insurers, review our Medicare Advantage guide, our Molina Healthcare vs. Kaiser Permanente comparison, our Kaiser Permanente vs. Blue Shield comparison, and before the Annual Enrollment Period (AEP), use our plan comparison checklist.
How to choose with help from a licensed agent
If you value a broad network of independent hospitals, already have Medi-Cal with Health Net, or prefer the flexibility of a PPO plan, it is worth comparing the Health Net plans available in your county. If you already see your doctors within Kaiser Permanente and value having everything — doctor, specialist, hospital, and pharmacy — in one system, a Kaiser HMO plan can give you continuity and a predictable premium. A licensed agent can review the specific plans from both insurers available in your exact ZIP code, verify networks and formularies, and explain the differences without pushing you toward a particular brand.
Free, unbiased bilingual help comparing
I am Karla Arámburo, an independent, bilingual insurance agent licensed in California to serve families in Orange, Los Angeles, San Diego, and Riverside counties. As an independent agent, I am not limited to Health Net, Kaiser Permanente, or any particular insurer: I review your current doctors, your medications, your Medi-Cal eligibility, and your budget, and compare the specific plans available in your ZIP code, in Spanish or English, at no cost to you. I also offer life insurance options that accept an ITIN for families without a Social Security number.
You can call or text (619) 321-8733 or schedule a free consultation. This page is general education, not individualized advice or a recommendation of a specific product or insurer.
Frequently asked questions
Do Health Net and Kaiser Permanente offer the same plans across all of Southern California?
No. Health Net contracts with a broad network of independent hospitals and doctors by county, with a strong presence in Los Angeles and San Diego, while Kaiser Permanente concentrates its coverage around its own medical centers. Exact availability for each insurer changes by county and ZIP code.
Is Health Net the same as Centene?
Health Net is a brand of Centene Corporation, one of the largest health insurers in the country. Centene is the parent company, but Health Net directly manages your plan, your doctor network, and your claims in California, with its own Medicare Advantage plan structure.
Are Health Net plans HMO or PPO?
Health Net offers both types in Southern California, although its lineup tends to have more HMO options in certain counties. Kaiser Permanente, by contrast, is almost exclusively HMO within its own integrated system. The exact proportion of HMO and PPO available changes by county and by year for both insurers.
If I already have Medi-Cal with Health Net, should I stay with Health Net for Medicare?
It is not a requirement. Health Net also administers Medi-Cal plans in several counties (sometimes jointly with CalViva in the Central Valley), and some of its Dual Eligible Special Needs Plans (D-SNPs) coordinate Medicare and Medi-Cal together. Even so, it is worth comparing against other insurers, including Kaiser Permanente, for your specific ZIP code.
Which insurer has better add-on benefits like dental or an OTC/flex card?
It depends on the specific plan, not the insurer in general. Both offer plans with dental, vision, hearing, and OTC/flex card benefits, but the amount, the dental provider network, and participating stores change from plan to plan and year to year.
Which insurer is better overall?
Neither is better in general; each works well for different needs. Health Net tends to suit those who want a broad network of independent providers or already have Medi-Cal with Health Net. Kaiser Permanente tends to suit those who value coordinated care within one system and already have doctors there. The best option depends on your current doctors, your medications, and your budget.
Can you help me compare specific Health Net and Kaiser Permanente plans in my ZIP code?
Yes. I review your current doctors, your medications, and your budget, and compare the specific Health Net, Kaiser Permanente, and other Medicare Advantage plans available in your ZIP code, in Spanish or English, at no cost to you.