# Atlas Commons research objects — Medicare Advantage organization directory entry for Contra Costa Health Care Plus (HMO D-SNP) (contract H5119) — context brief

CMS Medicare Advantage Plan Directory entry for Contra Costa Health Care Plus (HMO D-SNP) (contract H5119): organization identity (type, plan type, parent, CMS region), enrollment, and directory contact — all verbatim CMS-published values (RECORDED). Epistemic status of each figure is labeled. This is an organizational directory — not plan benefits, premiums, or star ratings; use medicare.gov/plan-compare to compare actual plans. CC0.

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

- **Contra Costa Health Care Plus (HMO D-SNP) (contract H5119) is a CMS-contracted Local CCP offering HMO/HMOPOS plans** — RECORDED · CMS Medicare Advantage Plan Directory (https://www.cms.gov/medicare/health-drug-plans/medicare-advantage)
- **Contra Costa Health Care Plus (HMO D-SNP) (contract H5119) has 401 reported CMS enrollment** — RECORDED · CMS Medicare Advantage Plan Directory (https://www.cms.gov/medicare/health-drug-plans/medicare-advantage)
- **CMS MA Plan Directory contact for Contra Costa Health Care Plus (HMO D-SNP) (contract H5119)** — RECORDED · CMS Medicare Advantage Plan Directory (https://www.cms.gov/medicare/health-drug-plans/medicare-advantage)
- **What this Medicare Advantage directory entry is — and is NOT — for Contra Costa Health Care Plus (HMO D-SNP) (the epistemic boundary)** — INTERPRETATION · Coverage Atlas framing (over the CMS MA Plan Directory facts above) (https://coverage-atlas.ryanjhunter.workers.dev/coverage/medicare-advantage/h5119)

Do not take these on trust — re-fetch each named source. Full structured object: `https://coverage-atlas.ryanjhunter.workers.dev/coverage/medicare-advantage/h5119.jsonld` · anatomy of the research object: see /commons/the-research-object

**Contra Costa Health Care Plus (HMO D-SNP) (H5119) — CMS MA Plan Directory identity (all RECORDED)** (11): Contract number — H5119 — RECORDED — CMS Medicare Advantage Plan Directory; Legal entity name — CONTRA COSTA COUNTY MEDICAL SERVICE DBA CONTRA COSTA HEALTH PLAN — RECORDED — CMS Medicare Advantage Plan Directory; Organization marketing name — Contra Costa Health Care Plus (HMO D-SNP) — RECORDED — CMS Medicare Advantage Plan Directory…
**Contra Costa Health Care Plus (HMO D-SNP) (H5119) — CMS MA Plan Directory contact (all RECORDED)** (6): Contact name — Karl Fischer — RECORDED — CMS Medicare Advantage Plan Directory; Contact title — Communications Coordinato — RECORDED — CMS Medicare Advantage Plan Directory; Contact phone — 1-925-957-2682 — RECORDED — CMS Medicare Advantage Plan Directory…