If you live in Maricopa County and are shopping Medicare Advantage plans for 2026, two carriers are going to come up in almost every conversation. UnitedHealthcare and Humana are the two largest Medicare Advantage carriers in the country and both have a serious presence in the Valley. They run heavy advertising. Their plans are easy to find. Both are reasonable choices. But they are not the same, and the right one for you depends on your doctors, your medications, and how you actually use healthcare.
I am a licensed Medicare broker in Mesa, and I help seniors compare these two carriers all the time. This is the side-by-side I would walk you through in person, broken down by what actually matters when you are picking a plan.
Network Footprint in the Valley
The biggest practical difference between Medicare Advantage carriers is which doctors and hospitals are in network. A plan with the best benefits in the world is the wrong plan if your primary care physician will not accept it.
UnitedHealthcare in Maricopa County contracts heavily with Banner Health, which has the largest hospital and clinic footprint in the Valley by far. If you see Banner doctors, get care at Banner Estrella, Banner Desert, or Banner Gateway, and use Banner Urgent Care, UnitedHealthcare typically covers them in network. UHC also has solid contracting with HonorHealth, Dignity Health, and many independent practices. Their PPO plans tend to have the broadest networks in the Valley.
Humana in Maricopa County has built strong relationships with HonorHealth, Dignity Health, Abrazo, and several independent provider groups. They contract with Banner on some plans but historically have had a more limited Banner footprint than UHC. Humana’s HMO plans require you to pick a primary care doctor and stick with the network. Their PPO plans give you more flexibility but tend to have higher premiums.
The practical takeaway. If your primary care doctor or specialists are part of the Banner system, UnitedHealthcare is usually the easier fit. If your providers are HonorHealth, Abrazo, or independent, both carriers may work but Humana has often had stronger contracting in those networks. The right answer is to actually verify each of your specific doctors against the plan’s network before you enroll, not after. I do this for every client.
Drug Coverage and Pharmacy Networks
The next thing that matters is how each carrier covers your specific medications. Both UHC and Humana offer integrated Part D coverage on most of their Medicare Advantage plans, but their formularies and pharmacy networks differ.
UnitedHealthcare’s formulary tends to be broad, with most common medications covered at predictable tiers. Their plans pair with OptumRx for pharmacy benefits, which has a large preferred pharmacy network including Walgreens, CVS, Walmart, and Albertsons in the Valley. Mail order through OptumRx is generally smooth.
Humana has its own pharmacy benefit, including a strong relationship with Walmart for low-cost preferred pharmacy access. Their formulary is competitive and many specialty medications are covered well. Humana’s mail order pharmacy is run in-house and works reliably.
For most generics, both carriers come out very close in cost. The real differences show up on brand name medications and specialty drugs. A diabetic on a specific brand of insulin might pay $35 a month on one carrier and $0 a month on the other depending on tier placement and the manufacturer rebate arrangements. A heart patient on a specific brand of blood thinner might find the same drug on tier 3 at one carrier and tier 4 at another. These differences add up to real money over a year.
This is where the medicare.gov Plan Finder is your friend. Enter the exact medications you take, including dosages, and the tool will show you what each plan would cost you for those drugs over the year. A broker can run this comparison faster, but the data source is the same.
Premiums, Deductibles, and Out-of-Pocket Maximums
Both carriers offer $0 premium plans in Maricopa County, and both also offer plans with monthly premiums for richer benefits.
UnitedHealthcare’s most popular $0 premium plan in Maricopa County is the AARP Medicare Advantage plan. The plan typically has a $0 medical deductible, modest copays for primary care and specialists, and an out-of-pocket maximum somewhere in the mid-$5,000 range for in-network care. Higher-tier UHC plans with monthly premiums offer broader networks, lower copays, or richer extras.
Humana’s most popular $0 premium plan is the Humana Honor or similar branded plan. Specifications vary year to year, but the structure is comparable. $0 deductible, similar copays, similar out-of-pocket maximums.
The plans can look almost identical on paper. The differences show up in the specific copays for things you might use a lot. One plan might have a $0 copay for primary care visits while the other has $10. One might charge $300 a day for the first 5 days of a hospital stay while the other charges $325 for the first 7 days. These are not earth-shaking differences, but they matter to budget-conscious shoppers.
The most important number on any Advantage plan is the out-of-pocket maximum. This is the most you can spend on covered medical services in a calendar year. Once you hit it, the plan pays 100 percent for the rest of the year. In Maricopa County for 2026, both UHC and Humana have plans in the $4,000 to $7,500 range. Lower out-of-pocket maximums mean better protection if you have a bad year. Higher numbers mean you accept more risk in exchange for richer extras or lower premiums elsewhere.
Extra Benefits That Get Marketed
Both carriers spend a lot of advertising money promoting extras like dental, vision, hearing, fitness, OTC allowances, transportation, and grocery benefits. Here is the honest comparison.
Dental coverage on the basic plans from both carriers is decent for cleanings and routine care, modest for major work like crowns or dentures. UHC’s AARP plans typically include a network through DentaQuest. Humana has its own dental network. Coverage levels are roughly comparable, with annual maximums often in the $1,000 to $2,500 range depending on plan tier.
Vision is similar at both carriers. An annual exam covered, a frame allowance every year or two, lens coverage. Worth more if you wear glasses, basically a wash if you do not.
Hearing coverage varies considerably. UHC’s plans often include UnitedHealthcare Hearing, with hearing aids available at a fixed copay starting around $375 to $1,250 per device depending on technology level. Humana plans often include similar coverage through TruHearing. Both are real money savers if you need hearing aids.
Fitness benefits are usually free gym memberships through Renew Active or SilverSneakers. UHC includes Renew Active, which gives access to many gyms in the Valley. Humana traditionally offers SilverSneakers, with a similarly broad gym list. Both work for active seniors.
OTC and grocery allowances have grown a lot in recent years. Some Humana plans include monthly allowances of $50 to $150 for over-the-counter items and groceries at participating retailers. UHC plans on the AARP side and the Dual Special Needs side also have OTC allowances, often loaded onto a card. The amounts and what they cover vary, and these are worth comparing closely if you spend regularly on OTC or are food-budget conscious.
Transportation benefits are common at both carriers but the rules differ. Some plans include a fixed number of free rides per year to medical appointments. Others limit it to dialysis or specific care types. Read the details.
Customer Service and Claims Experience
This is harder to quantify but matters in real life.
UnitedHealthcare is the largest Medicare Advantage carrier in the country, with roughly 30 percent national market share. They have massive infrastructure, well-built apps, and a generally smooth claims experience. They also handle a huge volume of complaints simply by virtue of size. Wait times can be long during AEP. Once you get a representative, they are usually competent.
Humana is the second-largest Medicare Advantage carrier nationally and has invested heavily in customer experience. Their app is solid. Their phone support tends to have shorter wait times than UHC, especially outside AEP. Both carriers are in roughly the same range on customer satisfaction surveys, and both have areas where they do well and areas where they struggle.
A working broker like me has a shortcut. We have dedicated agent lines and can often get issues resolved faster than a member can on their own. This is one of the reasons working with a broker pays off after enrollment, not just at the time of selection.
Star Ratings in Maricopa County for 2026
CMS rates Medicare Advantage plans on a 5-star scale based on quality, customer service, and health outcomes. Star ratings do not change every year by much, but they matter for two reasons. First, plans rated 5 stars can enroll members year-round during a Special Enrollment Period. Second, higher-rated plans tend to have more rebate dollars to put toward extras.
For 2026, both UHC and Humana have 4-star and 4.5-star plans available in Maricopa County. Specific plan ratings change year to year, and a star rating is one data point among many. I would not pick a plan solely based on its star rating, but a plan that drops to 3 stars is worth a closer look.
Which One Should You Pick?
There is no universal winner. The right answer for you depends on your specific situation. Here are the rules of thumb I use.
UnitedHealthcare often wins for people who use the Banner Health system, take fairly common medications, want broad PPO network access, and like the AARP-branded plan structure.
Humana often wins for people who use HonorHealth or Abrazo, take medications that fall favorably on Humana’s formulary, value the OTC and grocery allowances, and prefer a Walmart preferred pharmacy.
For people with complex medication needs, the carrier with better drug coverage often beats the one with the slightly better extras. For people in good health with predictable needs, the extras matter more.
For people who travel, neither carrier’s HMO plans are great, and a PPO from either, or a Medigap supplement instead of Medicare Advantage, may be a better answer.
Need Help Comparing Plans for Your Specific Situation?
If you are looking at UnitedHealthcare, Humana, or any other Medicare Advantage option in Maricopa County, I can run the actual comparison for you using your specific doctors and medications. I have been doing this for 7 years in Mesa, and I work with seniors across the Valley.
Call me at 480-296-5804 or request a free consultation. No pressure, no obligation, and no cost to you. The service is paid by the insurance carrier when you enroll, and the commission is the same across plans, so I have no incentive to push one over the other.