Medicare Advantage, Part D, Medicaid

LIS Contract Enrollment by County, 2009-2026

medicare_silver.lis_contract_county·live·silver

Rows

1,927,349

Columns

History

N/A

Card

nocolumns only

Typed tools

What it is

1The Low-Income-Subsidy enrollees of every Part D contract in every county, MA-PD and PDP separately, one snapshot per plan year: where the dual / LIS members sit by carrier and county.
22026: 96,628 MA-PD and 24,833 PDP contract-county rows.

Grain

Key	Grain
N/A	1One row per (plan_year, part_d_stream, contract_id, state_fips, county_fips).

Columns (29)

Column	Type	Meaning
`plan_year`	int
`part_d_stream`	string
`contract_id`	string
`state_fips`	string
`county_fips`	string
`fips5`	string
`state_code_raw`	string
`county_code_raw`	string
`state_name_raw`	string
`county_name_raw`	string
`contract_name_raw`	string
`lis_enrolled`	int
`lis_lower_bound`	int
`lis_upper_bound`	int
`lis_suppression_reason_code`	string
`as_of_date`	date
`as_of_date_basis`	string
`schema_era`	string
`source_member`	string
`source_sheet`	string
`observed_period`	date
`asserted_at`	date
`effective_period_start`	date
`effective_period_end`	date
`cms_vintage_sequence`	int
`parse_revision`	int
`parser_artifact_hash`	string
`source_url`	string
`sha256_content_hash`	string

Query it

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

Item	Value
Typed tools that read it	none; raw SQL
Identity key	`plan_year,part_d_stream,contract_id,state_fips,county_fips`
Join	`how_to_join(source_fqn="medicare_silver.lis_contract_county")`
Raw door	Athena (read-only via query_substrate): medicare_silver.lis_contract_county
Note	Register source cms_lis_contract_enrollment_by_county (w3, serve raw). RAW. Loaded 2026-09-29 (verify_tracker_loads PASS 2026-09-30: 1,927,349 rows, 0 duplicate keys, 0 lineage nulls; Athena 02a29f40, 186c89aa, c7573024). Cell reconciliation PASS on 9 editions incl. 2009 and 2026. Registered by the Data Tracker registration lane 2026-09-30.

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