# Security Health Plan of Wisconsin, Inc. — Medicare star rating (contract H5211, 2026) — context brief

CMS 2026 star ratings for Security Health Plan of Wisconsin, Inc. (Medicare Advantage (HMO/PPO), contract H5211, parent Marshfield Clinic Health System, Inc.): 4.5-star Overall, Part C health 4★, Part D drug 4.5★. CMS quality DETERMINATIONS (occurred=false, adjudged=true — CMS's official designation, not reproducible from public inputs). A quality summary across enrollees — not a guarantee of your experience, not plan availability, not advice. CC0.

Claims (warrant · source), each re-fetchable to verify:

- **Security Health Plan of Wisconsin, Inc. — Overall rating: 4.5 of 5 stars (2026)** — PROJECTED · CMS — Medicare Advantage & Part D Star Ratings, 2026 (https://www.cms.gov/medicare/health-drug-plans/part-c-d-performance-data)
- **Security Health Plan of Wisconsin, Inc. — Part C (health) rating: 4 of 5 stars (2026)** — PROJECTED · CMS — Medicare Advantage & Part D Star Ratings, 2026 (https://www.cms.gov/medicare/health-drug-plans/part-c-d-performance-data)
- **Security Health Plan of Wisconsin, Inc. — Part D (drug) rating: 4.5 of 5 stars (2026)** — PROJECTED · CMS — Medicare Advantage & Part D Star Ratings, 2026 (https://www.cms.gov/medicare/health-drug-plans/part-c-d-performance-data)
- **What a CMS star rating is — and is NOT** — INTERPRETATION · Coverage Atlas L5 boundary (a population quality rating ≠ your individual experience) (https://coverage-atlas.ryanjhunter.workers.dev/)

Do not take these on trust — re-fetch each named source. Full structured object: `https://coverage-atlas.ryanjhunter.workers.dev/coverage/star-ratings/h5211.jsonld` · anatomy of the research object: see /commons/the-research-object

**CMS star ratings — Security Health Plan of Wisconsin, Inc. (contract H5211, 2026)** (3): Overall — 4.5 of 5 — DETERMINATION; Part C (health) — 4 of 5 — DETERMINATION; Part D (drug) — 4.5 of 5 — DETERMINATION…