# CMS Medicare specialty to provider taxonomy crosswalk history

`medicare_silver.resdac_specialty_taxonomy_crosswalk` · Medicare Advantage, Part D, Medicaid · status live · 12,900 rows

Complete recoverable CMS Medicare Provider and Supplier Taxonomy Crosswalk history across PDF, legacy Socrata CSV, and Data.CMS.gov CSV eras, retaining many-to-many relationships, physical row lineage, raw rows, quality flags, and analytics eligibility.

**Grain.** One row per CMS crosswalk release asset and physical source row.

| column | type | meaning |
|---|---|---|
| release_date | date |  |
| schema_era | string |  |
| medicare_specialty_code | string |  |
| medicare_provider_supplier_description | string |  |
| provider_taxonomy_code | string |  |
| provider_taxonomy_description | string |  |
| source_asset_id | string |  |
| source_member | string |  |
| source_page | int |  |
| source_row_number | bigint |  |
| raw_row_json | string |  |
| quality_flags | string |  |
| is_current_release | boolean |  |
| is_analytics_eligible | boolean |  |
| 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 |  |
| source_id | string |  |
| is_current | boolean |  |
| bronze_object_key | string |  |
| s3_version_id | string |  |
| vintage_tag | string |  |
| drug_source_version_id | string |  |

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