# MA monthly enrollment by contract, names as CMS wrote them

`medicare_semantic.vw_monthly_contract_enrollment_summary_v2` · Medicare Advantage, Part D, Medicaid · status live · 203,758 rows

CMS Monthly Enrollment by Contract: every row of medicare_silver.monthly_contract_enrollment_summary with organization, marketing and parent names restored where CMS's 2006-2019 files carry DOS glyphs; the stored values are kept in <column>_legacy.

**Grain.** One row per (contract_id, report_month) — CMS Monthly Enrollment by Contract (member counts). CERTIFIED 2026-06-03.

| 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 |  |
| organization_name_raw_legacy | string |  |
| organization_marketing_name_raw_legacy | string |  |
| parent_org_raw_legacy | string |  |
| text_corrected | boolean |  |

Query it: `query_substrate` with `SELECT ... FROM medicare_semantic.vw_monthly_contract_enrollment_summary_v2 WHERE ... LIMIT 100`; read `describe_data_source("medicare_semantic.vw_monthly_contract_enrollment_summary_v2")` first.