Medicare Advantage, Part D, Medicaid

MA spine: enrollment per plan x county x month (known counts)

medicare_semantic.ma_spine_enroll_plan_county_v20261012a·partial·mart

Rows

N/A

Columns

History

N/A

Card

nocolumns only

Typed tools

What it is

1Part of the MA spine (one connected, normalized Medicare Advantage layer: docs/architecture/2026-10-12-ma-spine.md).
2Built by tools/ma_spine/, rails pass (docs/architecture/ma-spine/STATUS.md).
3Accepted for the raw door 2026-11-02 (acceptance gate CANDIDATE, reachable, has data, schema captured;
4Omega's MA enrollment master reads it).

Grain

Key	Grain
N/A	1One row per contract-plan x county SSA x month with a published count (MA contracts H/R), market, product, lineage, parent as was / as now. 2Partitioned by year.

Columns (14)

Column	Type	Meaning
`contract_id`	string
`plan_id`	string
`county_ssa`	string
`county_fips`	string
`state`	string
`report_month`	date
`members`	int
`egwp_plan_id`	boolean
`market_key`	string
`product_type`	string
`lineage_id`	string
`parent_id_as_was`	string
`parent_id_as_now`	string
`spine_version`	varchar(10)

Query it

describe_data_source(source_fqn="medicare_semantic.ma_spine_enroll_plan_county_v20261012a")     # the card, live
query_substrate(sql="SELECT * FROM medicare_semantic.ma_spine_enroll_plan_county_v20261012a WHERE <filter> LIMIT 100")

Item	Value
Typed tools that read it	none; raw SQL
Identity key	`contract_id,plan_id,county_ssa,report_month`
Join	`how_to_join(source_fqn="medicare_semantic.ma_spine_enroll_plan_county_v20261012a")`
Raw door	Athena: medicare_semantic.ma_spine_enroll_plan_county_v20261012a (accepted 2026-11-02)

This page as markdown: /docs-md/data/medicare_semantic_ma_spine_enroll_plan_county_v20261012a.md · every page in one file: /llms-full.txt