Provider identity

CMS POS Ambulatory Surgical Center Roster

vlada_curated.dim_asc·live·dim·Medicare Ambulatory Surgery Center (ASC) Rates

Rows

N/A

Columns

History

N/A

Card

nocolumns only

Typed tools

What it is

1CMS Provider of Services File, iQIES distribution ("Provider of Services File - Internet Quality Improvement and Evaluation System"): the quarterly multi-provider-type POS file, FILTERED to ASC rows (prvdr_type_id = "11").
2ASCs were migrated off the legacy OSCAR/QIES "Hospital_and_other" file onto iQIES, so this is the current home of the certified-ASC roster. ~182 source columns reduced to the roster spine — CCN, facility name, city/state/ZIP, composed 5-digit county FIPS, active flag (from pgm_trmntn_cd), provider type/subtype, ownership/control code, and ASC begin-service date.
3The runner discovers the current CSV from data.cms.gov's data.json so it always pulls the latest quarter.

Grain

Key	Grain
N/A	1One row per Medicare-certified ambulatory surgical center (by CCN) per quarterly POS snapshot.

Columns (27)

Column	Type	Meaning
`ccn`	string
`fac_name`	string
`city`	string
`state_cd`	string
`zip_cd`	string
`county_fips`	string
`is_active`	boolean
`provider_type_id`	string
`provider_subtype_id`	string
`control_type_cd`	string
`termination_code`	string
`asc_begin_service_date`	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
`source_id`	string
`is_current`	boolean
`bronze_object_key`	string
`s3_version_id`	string
`vintage_tag`	string
`drug_source_version_id`	string

Query it

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

Item	Value
Typed tools that read it	none; raw SQL
Identity key	`ccn`
Join	`how_to_join(source_fqn="vlada_curated.dim_asc")`
Raw door	Athena: vlada_curated.dim_asc (Iceberg: medicare_silver.dim_asc)
Note	Iceberg table medicare_silver.dim_asc, partitioned by state_cd; one atomic per-state replace per quarterly ingest (idempotent by SHA-256).

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