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Medicare Plan Complaint Index
A transparent ranking of Medicare Advantage and Part D contracts by CMS complaint rates (complaints per 1,000 enrollees). Built for shoppers, caregivers, and agents who want government-sourced context — not marketing spin.
Complaint data: 2026 Star Ratings (CY2024 measurement for C28/D02) · Last synced July 2026
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Complaint data: 2026 Star Ratings (CY2024 measurement for C28/D02) · Last synced July 2026
Contracts with material published Florida enrollment (July 2026 CPSC)
| Rank | Carrier / contract | Complaint rate | Trend | Star context | Type |
|---|---|---|---|---|---|
| #1 | Highmark Blue Cross Blue Shield or Highmark Blue S Contract S1140 · Florida | 0.00 / 1,000 | Stable | 5.0 | Part D |
| #2 | Independence Blue Cross Contract S6875 · Florida | 0.00 / 1,000 | Stable | 5.0 | Part D |
| #3 | UnitedHealthcare Contract H1537 · Florida | 0.01 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #4 | Excellus Health Plan, Inc Contract S3521 · Florida | 0.01 / 1,000 | Stable | 5.0 | Part D |
| #5 | Moda Health Plan, Inc. Contract S5975 · Florida | 0.01 / 1,000 | Stable | 5.0 | Part D |
| #6 | Optum Insurance of Ohio, Inc. Contract S8841 · Florida | 0.01 / 1,000 | Stable | 5.0 | Part D |
| #7 | Navitus MedicareRx Contract S9701 · Florida | 0.01 / 1,000 | Stable | 5.0 | Part D |
| #8 | Express Scripts Medicare Contract S5660 · Florida | 0.02 / 1,000 | Stable | 5.0 | Part D |
| #9 | Capital Health Plan Contract H5938 · Florida | 0.03 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #10 | Blue MedicareRx Contract S2893 · Florida | 0.03 / 1,000 | Stable | 5.0 | Part D |
| #11 | EmblemHealth Contract S5966 · Florida | 0.03 / 1,000 | Stable | 5.0 | Part D |
| #12 | Excellus Health Plan, Inc Contract H3335 · Florida | 0.04 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #13 | Priority Health Medicare Contract H4875 · Florida | 0.04 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #14 | Blue Medicare Advantage Contract H6078 · Florida | 0.04 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #15 | Humana Contract H7617 · Florida | 0.04 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #16 | Blue Cross Blue Shield of Michigan Contract H9572 · Florida | 0.04 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #17 | MedicareBlue Rx Contract S5743 · Florida | 0.04 / 1,000 | Stable | 4.0 | Part D |
| #18 | UnitedHealthcare Contract S5820 · Florida | 0.04 / 1,000 | Stable | 4.0 | Part D |
| #19 | Florida Blue Contract S5904 · Florida | 0.04 / 1,000 | Stable | 4.0 | Part D |
| #20 | Health First Health Plans, Inc. Contract H1099 · Florida | 0.05 / 1,000 | Improving | 5.0 | Medicare Advantage |
| #21 | Aetna Medicare Contract H5522 · Florida | 0.05 / 1,000 | Improving | 5.0 | Medicare Advantage |
| #22 | Blue Cross and Blue Shield of Minnesota Contract H5959 · Florida | 0.05 / 1,000 | Stable | 5.0 | Medicare Advantage |
| #23 | Blue Cross Blue Shield Association Contract S2135 · Florida | 0.05 / 1,000 | — | 4.0 | Part D |
| #24 | MG Insurance Company Contract S3285 · Florida | 0.05 / 1,000 | Stable | 4.0 | Part D |
| #25 | Blue Cross and Blue Shield of IL, NM, OK, TX Contract S5715 · Florida | 0.05 / 1,000 | Stable | 4.0 | Part D |
Rank #1
Highmark Blue Cross Blue Shield or Highmark Blue S
S1140
0.00
per 1,000
Stable5.0 starsPart DRank #2
Independence Blue Cross
S6875
0.00
per 1,000
Stable5.0 starsPart DRank #3
UnitedHealthcare
H1537
0.01
per 1,000
Stable5.0 starsMedicare AdvantageRank #4
Excellus Health Plan, Inc
S3521
0.01
per 1,000
Stable5.0 starsPart DRank #5
Moda Health Plan, Inc.
S5975
0.01
per 1,000
Stable5.0 starsPart DRank #6
Optum Insurance of Ohio, Inc.
S8841
0.01
per 1,000
Stable5.0 starsPart DRank #7
Navitus MedicareRx
S9701
0.01
per 1,000
Stable5.0 starsPart DRank #8
Express Scripts Medicare
S5660
0.02
per 1,000
Stable5.0 starsPart DRank #9
Capital Health Plan
H5938
0.03
per 1,000
Stable5.0 starsMedicare AdvantageRank #10
Blue MedicareRx
S2893
0.03
per 1,000
Stable5.0 starsPart DRank #11
EmblemHealth
S5966
0.03
per 1,000
Stable5.0 starsPart DRank #12
Excellus Health Plan, Inc
H3335
0.04
per 1,000
Stable5.0 starsMedicare AdvantageRank #13
Priority Health Medicare
H4875
0.04
per 1,000
Stable5.0 starsMedicare AdvantageRank #14
Blue Medicare Advantage
H6078
0.04
per 1,000
Stable5.0 starsMedicare AdvantageRank #15
Humana
H7617
0.04
per 1,000
Stable5.0 starsMedicare AdvantageRank #16
Blue Cross Blue Shield of Michigan
H9572
0.04
per 1,000
Stable5.0 starsMedicare AdvantageRank #17
MedicareBlue Rx
S5743
0.04
per 1,000
Stable4.0 starsPart DRank #18
UnitedHealthcare
S5820
0.04
per 1,000
Stable4.0 starsPart DRank #19
Florida Blue
S5904
0.04
per 1,000
Stable4.0 starsPart DRank #20
Health First Health Plans, Inc.
H1099
0.05
per 1,000
Improving5.0 starsMedicare AdvantageRank #21
Aetna Medicare
H5522
0.05
per 1,000
Improving5.0 starsMedicare AdvantageRank #22
Blue Cross and Blue Shield of Minnesota
H5959
0.05
per 1,000
Stable5.0 starsMedicare AdvantageRank #23
Blue Cross Blue Shield Association
S2135
0.05
per 1,000
—4.0 starsPart DRank #24
MG Insurance Company
S3285
0.05
per 1,000
Stable4.0 starsPart DRank #25
Blue Cross and Blue Shield of IL, NM, OK, TX
S5715
0.05
per 1,000
Stable4.0 starsPart D
Methodology & data provenance
Source: CMS 2026 Star Ratings Data Tables — Measure Data. Dataset: C28: Complaints about the Health Plan · D02: Complaints about the Drug Plan (rate per 1,000 member months / CMS Star measure scale). Vintage 2026 Star Ratings (CY2024 measurement for C28/D02), last successful sync July 2026.
- Complaint rates come from the CMS 2026 Star Ratings Measure Data table: C28 (Complaints about the Health Plan) when reported; otherwise D02 (Complaints about the Drug Plan).
- Measurement period for C28/D02 in the 2026 Star Ratings package is calendar-year 2024 (01/01/2024 – 12/31/2024), published in the 2026 Star Ratings data tables.
- Rankings sort by lowest complaint rate first. Zero is a real CMS-reported rate, not missing data.
- State tabs (Florida / Texas) include contracts with at least 50 published enrollees in that state in the July 2026 Monthly Enrollment by Contract/Plan/State/County file. National PDP contracts that enroll beneficiaries in those states may appear.
- Employer/union-only direct contracts are excluded from consumer-facing rankings.
- Trend compares the same contract’s 2026 vs 2025 Star Ratings complaint measure (improving = lower rate).
- Star values shown are the CMS star for the complaint measure (C28/D02), not always the overall Part C/D summary rating.
- Contract-level rates can differ from plan-level marketing names; parent organizations may operate multiple contracts.
- This index is educational transparency content only — not an endorsement and not a sole measure of quality.
CMS columns used in this build
CONTRACT_ID · Organization Marketing Name · C28 Complaints about the Health Plan (primary rate) · D02 Complaints about the Drug Plan (fallback) · C28/D02 measure stars · 2025→2026 rate delta for trend · July 2026 CPSC enrollment for Florida/Texas material-enrollment filters. Refresh via scripts/import-cms-complaint-rankings.mjs.
Editorial disclaimer
This index is educational transparency content only. It is not medical, legal, or insurance advice; not an endorsement of any carrier or contract; and not affiliated with CMS, HHS, or any plan sponsor. Complaint rates are one of many factors — always verify current plan details, formularies, networks, and your own needs with official CMS tools (Medicare.gov), licensed agents, and the plan materials. Insurance Trust Hub does not sell insurance.
Independent directory. Not affiliated with any insurance carrier, agency, or agent. All information is for research purposes only. Always verify licensing directly with your state's Department of Insurance, NAIC, or official sources before engaging any provider.