AARP Medicare Advantage from UHC CA-0010 (HMO-POS) in Mendocino County, California — 2026 plan details
Last updated Jul 18, 2026
Reviewed by Jason Burns, Editorial Steward
Published by Senior Direct Answers · Licensed under Citation License 1.0
AARP Medicare Advantage from UHC CA-0010 (HMO-POS) (H0543-140) is a $89-premium Medicare Advantage HMO-POS from UnitedHealth Group, Inc. available in Mendocino County, California in 2026, with a 4.0-star overall rating, a $6,700 in-network out-of-pocket maximum, and a $600 annual Part D drug deductible.
Plan facts (CMS CY2026 Landscape file)
| Organization | UnitedHealth Group, Inc. |
|---|---|
| Plan name | AARP Medicare Advantage from UHC CA-0010 (HMO-POS) |
| Contract ID | H0543 |
| Plan ID | 140 |
| Segment ID | 0 |
| Contract year | 2026 |
| Contract category | MA-PD |
| Plan type | HMO-POS |
| SNP | No |
| Monthly consolidated premium | $89.00 |
| Part C premium | $76.70 |
| Part D basic premium | $12.30 |
| Part D total premium | $12.30 |
| Annual Part D deductible | $600.00 |
| Maximum out-of-pocket (in-network) | $6700.00 |
| Overall star rating | 4.0 |
How this plan is structured
- $89 consolidated premium. A $0 or near-$0 consolidated premium does not remove the Part B premium — the standard 2026 Part B premium is $202.90 per month and still applies. See the 2026 Medicare Part B premium.
- HMO-POS plan type. In an HMO-style Medicare Advantage plan, in-network care and primary-care referral rules generally apply. See how Medicare Advantage HMO and PPO plans differ.
- $6,700 in-network out-of-pocket maximum. The MOOP is the annual cap on what a member pays in-network for covered Part A and Part B services. See how the Medicare Advantage MOOP works.
- Service area = Mendocino County. Medicare Advantage plans are sold by service area; moving out of the plan's service area triggers a Special Enrollment Period to switch plans. See how moving changes your Medicare options.
How it compares in Mendocino County
The CMS CY2026 Landscape file lists 4 Medicare Advantage plans in Mendocino County, California, of which 0 carry a 5.0-star overall rating and 3 have a $0 consolidated monthly premium. Consolidated premiums range from $0.00 to $89.00 per month, and in-network out-of-pocket maximums range from $296.00 to $6700.00.
For the full county plan directory, see all Medicare plans in Mendocino County, California.
How to verify your doctors take this plan
Network participation changes throughout the year; we hold no provider-network data, so verify directly with these three sources before you decide:
- Open the plan's official Medicare.gov page and use its provider-directory link: Medicare.gov Plan Finder — H0543-140.
- Call the plan (UnitedHealth Group, Inc.) using the member-services number listed on that plan page and ask whether each doctor, hospital, and pharmacy is in-network for 2026.
- Get free, unbiased help from your State Health Insurance Assistance Program (SHIP) — see free unbiased Medicare help from SHIP.
What H0543-140 means
CMS assigns every Medicare Advantage and Part D offering a plan identifier made of three parts. In H0543-140, the leading H marks the contract type (H = Medicare Advantage / Part C contract), the four digits 0543 are the contract number issued to the organization, and the three-digit 140 is the plan benefit package under that contract. The segment ID 0 identifies the service-area segment within the plan (0 = the default single segment).
Frequently asked questions
Is AARP Medicare Advantage from UHC CA-0010 (HMO-POS) an HMO or PPO?
AARP Medicare Advantage from UHC CA-0010 (HMO-POS) is an HMO-POS — a Health Maintenance Organization-style Medicare Advantage plan, meaning in-network care and referral rules generally apply.
Does AARP Medicare Advantage from UHC CA-0010 (HMO-POS) include prescription drug coverage?
Yes — AARP Medicare Advantage from UHC CA-0010 (HMO-POS) is a Medicare Advantage plan with prescription drug coverage (MA-PD) and a $600.00 annual Part D drug deductible for 2026.
What is the maximum out-of-pocket cost for AARP Medicare Advantage from UHC CA-0010 (HMO-POS)?
The 2026 in-network maximum out-of-pocket limit for AARP Medicare Advantage from UHC CA-0010 (HMO-POS) is $6700.00, per the CMS CY2026 Landscape file.
What counties offer AARP Medicare Advantage from UHC CA-0010 (HMO-POS) (H0543-140)?
AARP Medicare Advantage from UHC CA-0010 (HMO-POS) (H0543-140) is offered in six California counties: Amador County, El Dorado County, Lake County, Mendocino County, Merced County, and Tulare County.
Sources
- CMS, Plan Year 2026 Medicare Advantage & Part D Landscape source file (March 2026) — retrieved 2026-07-18. Overall star rating year: 2026.
- Medicare.gov Plan Finder — compare plans and enroll.