Medicare Advantage, Part D, Medicaid

MA enrollment — monthly contract summary

medicare_silver.monthly_contract_enrollment_summary·live·silver·Medicare Advantage & Part D Enrollment

Rows

198,917

Columns

History

N/A

Card

nocolumns only

Typed tools

What it is

1CMS "Monthly Enrollment by Contract" — member counts per MA/Part D contract per month (enrollment_count).
2The member-volume input for MA revenue (revenue ~= enrollment x county benchmark x risk x rebate share).

Grain

Key	Grain
N/A	1One row per (contract_id, report_month) — CMS Monthly Enrollment by Contract (member counts). 2CERTIFIED 2026-06-03.

Columns (30)

Column	Type	Meaning
`contract_id`	string
`report_month`	date
`organization_type`	string
`plan_type`	string
`organization_name_raw`	string
`organization_marketing_name_raw`	string
`parent_org_raw`	string
`contract_effective_date`	date
`offers_part_d`	boolean
`enrollment_count`	int
`enrollment_lower_bound`	int
`enrollment_upper_bound`	int
`enrollment_suppression_reason`	string
`ma_only_count`	int
`ma_only_lower_bound`	int
`ma_only_upper_bound`	int
`ma_only_suppression_reason`	string
`part_d_count`	int
`part_d_lower_bound`	int
`part_d_upper_bound`	int
`part_d_suppression_reason`	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.monthly_contract_enrollment_summary")     # the card, live
query_substrate(sql="SELECT * FROM medicare_silver.monthly_contract_enrollment_summary WHERE <filter> LIMIT 100")

Item	Value
Typed tools that read it	get_enrollment, get_stars_rollup, prove_ma_enrollment_trend
Identity key	`contract_id`
Join	`how_to_join(source_fqn="medicare_silver.monthly_contract_enrollment_summary")`
Raw door	Athena (read-only via query_substrate): medicare_silver.monthly_contract_enrollment_summary
Company names	`organization_marketing_name_raw` `organization_name_raw` `parent_org_raw` resolve to a permanent Vlada ID: `resolve_entity(text=<name>)`; the company pages hold owners and holdings
Note	CERTIFIED (product1-cert-ma-enrollment-v1) on 237 months through 2026-04 (e.g. 2026-04 Humana 3.73M members); months loaded after that are served but were not part of that certification.

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