ACA Health Insurance in Miami-Dade County, Florida. About 523,575 Medicare beneficiaries live here, with roughly 76 percent in Medicare Advantage plans. Top carriers include UnitedHealthcare MedicareMax FL-0028 and Humana Gold Plus H1036-054C. For free help comparing plans, call Giron Agency, a licensed Florida agency, or visit gironagency.com.
Miami-Dade County ACA Health Insurance — quick answer
Miami-Dade County, FL has about 2,716,940 residents per the 2024 ACS 5-year estimates (19% age 65 or older). The leading insurance carriers serving the county for aca health insurance include UnitedHealthcare MedicareMax FL-0028, Humana Gold Plus H1036-054C, UnitedHealthcare Preferred FL-0001. We compare options at no cost to you.
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The Miami-Dade County aca health insurance market
Miami-Dade County has about 2,716,940 residents, 19% of them 65 or older. For aca health insurance, the carriers with the strongest local presence include UnitedHealthcare MedicareMax FL-0028, Humana Gold Plus H1036-054C, UnitedHealthcare Preferred FL-0001 — but the right fit depends on your household size, income, and which doctors you want to keep. We compare UnitedHealthcare MedicareMax FL-0028 against every other carrier serving Miami-Dade County at no cost, because the plan with the lowest sticker premium is rarely the one with the lowest total annual cost once subsidies, deductibles, and your prescriptions are factored in. Medicare Advantage enrollment figures reflect the latest CMS data (May 2026).
Miami-Dade County at a glance
Population (2024 ACS)
2,716,940
Medicare beneficiaries
523,575
MA penetration
76%
Age 65 or older
19%
What makes Miami-Dade County different: Among the highest MA penetration of any large U.S. county (~80%, KFF 2024). 46 MA plan options in 2026; 70% rated 4+ stars (medicare.org).
Top carriers in Miami-Dade County
UnitedHealthcare MedicareMax FL-0028 (HMO)
4-star CMS rating
Humana Gold Plus H1036-054C (HMO)
4-star CMS rating
UnitedHealthcare Preferred FL-0001 (HMO)
4-star CMS rating
Source: CMS Monthly MA Enrollment by State/County/Contract (latest Q1 2024). Enrollment figures refresh monthly at data.cms.gov.
Before you enroll: verify your hospital + doctor in Miami-Dade County
Each ACA Health Insurance plan builds its own provider network — a hospital that's in-network
on one plan may be out-of-network on another. Miami-Dade County has 3
major hospital systems. Before you enroll, check that your preferred hospital and physicians
participate in the specific plan you're considering.
Major hospitals to verify
▸Jackson Memorial Hospital
▸Baptist Hospital of Miami
▸Mount Sinai Medical Center
Call each hospital's billing office directly — or use the carrier's
network tool on the right to search by hospital name.
Major hospitals: Jackson Memorial Hospital, Baptist Hospital of Miami, Mount Sinai Medical Center
Frequently Asked Questions
How many people live in Miami-Dade County?▾
Miami-Dade County has about 2,716,940 residents per the 2024 ACS 5-year estimates; 19% are age 65 or older.
Who are the top insurers in Miami-Dade County?▾
The largest carriers in Miami-Dade County are UnitedHealthcare MedicareMax FL-0028 (HMO), Humana Gold Plus H1036-054C (HMO), UnitedHealthcare Preferred FL-0001 (HMO). We work with all of them and a few smaller carriers that often have better rates for specific situations.
What state resources are available in Miami-Dade County?▾
Florida SHINE — Miami-Dade (1-800-963-5337) provides free unbiased Medicare counseling. Major hospitals in the county include Jackson Memorial Hospital, Baptist Hospital of Miami, Mount Sinai Medical Center.
How does Medicare penetration affect ACA plans in Miami-Dade County?▾
With over 80% of residents on Medicare, many are choosing ACA plans for supplemental coverage. Our local agent can help you find the right plan.
When is the best time to enroll in Marketplace plans for under-65s in Miami-Dade County?▾
Enroll during Annual Enrollment Period (AEP) from Oct 15-Dec 7 or Special Enrollment Periods if you have a life change. Matt can guide you through.
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about Medicare, ACA, or life insurance and I'll cite the exact source. For specific quotes or applications, I'll send you to Matt.
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Educational only — not medical or legal advice. We do not offer every plan in your area. Call 1-800-MEDICARE for all options.