Ambulatory Specialty Model Participants

The Ambulatory Specialty Model (ASM) Participants dataset contains information on clinicians that are required to participate in the ASM, including their…

Part of the CMS Data Feeds Dataset › Medicare

Dataplex delivers this CMS feed as the analysis-ready table DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS on Snowflake and Databricks — coverage from 2026 to 2026 in a single aligned schema, refreshed automatically whenever CMS publishes a new file. Every row carries lineage back to the exact CMS source file that produced it.

Key facts

Snowflake	DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS
Databricks	cms_dwv.ambulatory_specialty_model_participants
Coverage	Jan 2026 – Dec 2026
Cadence	Annual
CMS published	2026-02-04
Loaded	2026-02-04
Columns	16 data + 6 lineage
Identifiers	NPI
File versions	1
License	CMS public data — U.S. Government work
Platforms	Snowflake Marketplace · Databricks Delta Sharing

Included in the CMS Data Feeds Dataset — start a free trial on Snowflake Marketplace.

Current — CMS last published this feed on 2026-02-04. Coverage runs through 2026-12-31. Next CMS release expected ~Feb 2027.

Sample queries

Snowflake

SELECT *
FROM DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS
LIMIT 100;

Databricks

About this feed

The Ambulatory Specialty Model (ASM) Participants dataset contains information on clinicians that are required to participate in the ASM, including their names, National Provider Identifiers (NPI), their cohort, and the performance years for which they must meet ASM's requirements.

— Source: CMS feed metadata

Keywords: Medicare, Hospitals & Facilities, Outpatient Facilities, Chronic Conditions, Value-Based Care, Service Delivery Models Theme: Medicare

Coverage timeline

2026 🟩

1 of 1 years covered — no gaps.

Release history

Reporting period	CMS published	Loaded	Latest file
2026-01-01 – 2026-12-31	2026-02-04	2026-02-04	✓

Data dictionary

📋 16 data columns + 6 lineage columns

Column-level definitions are maintained by CMS in the official Ambulatory Specialty Model Participants data dictionary.

Data columns

Column	Type
NPI	NUMBER
FIRST_NAME	TEXT
LAST_NAME	TEXT
STATE	TEXT
ASM_COHORT	TEXT
ORGANIZATION_LEGAL_NAME	TEXT
ASM_CY27_PARTICIPANT	BOOLEAN
ASM_CY27_SMALLPRACTICE	BOOLEAN
ASM_CY28_PARTICIPANT	TEXT
ASM_CY28_SMALLPRACTICE	TEXT
ASM_CY29_PARTICIPANT	TEXT
ASM_CY29_SMALLPRACTICE	TEXT
ASM_CY30_PARTICIPANT	TEXT
ASM_CY30_SMALLPRACTICE	TEXT
ASM_CY31_PARTICIPANT	TEXT
ASM_CY31_SMALLPRACTICE	TEXT

Lineage columns (present on every feed table)

Column	Type	Description
ROW_ID	TEXT	Unique row ID for this table (PK)
FILE_ID	TEXT	Source file — joins to FEEDS_FILES.ID (FK)
FILE_FEED_ID	TEXT	Parent feed — joins to FEEDS.ID (FK)
FILE_NAME	TEXT	Source file name as published by CMS
ROWNUM	NUMBER	Row number within the source file
CREATED_AT	TIMESTAMP_NTZ	Timestamp when the record was loaded

Row-level lineage

Every row in this table traces to the exact CMS source file that produced it. The FILE_ID column joins to the FEEDS_FILES catalog table, and FILE_FEED_ID joins to the FEEDS master table:

Trace any row back to its source file and reporting period:

SELECT d.NPI, d.FIRST_NAME, d.LAST_NAME,
       ff.TEMPORAL_START, ff.TEMPORAL_END, ff.CMS_FEED_MODIFIED
FROM DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS d
JOIN DWV.FEEDS_FILES ff ON d.FILE_ID = ff.ID;

Source & provenance

Published by the Centers for Medicare & Medicaid Services (bureau 009:38).

• Official CMS data dictionary

• Ambulatory Specialty Model Participants Methodology

Frequently asked questions

How often is Ambulatory Specialty Model Participants updated?

Annually. CMS last published this feed on 2026-02-04, and Dataplex loaded it to the warehouse the same day. New releases are added automatically when CMS publishes them.

What years does Ambulatory Specialty Model Participants cover?

2026 through 2026.

How many records are in Ambulatory Specialty Model Participants?

Count the current snapshot yourself once the share is mounted:

SELECT COUNT(*)
FROM DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS d
JOIN DWV.FEEDS_FILES ff ON d.FILE_ID = ff.ID
WHERE ff.IS_LATEST = 1;

How do I get Ambulatory Specialty Model Participants data?

It's included in the CMS Data Feeds Dataset on the Snowflake Marketplace (free trial available) and via Databricks Delta Sharing. Once mounted, query DWV.AMBULATORY_SPECIALTY_MODEL_PARTICIPANTS directly — no pipeline setup required.

Related feeds

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Get this feed

1. Start a free trial on Snowflake Marketplace or purchase via Databricks

2. Mount the share — the database and DWV schema appear in your account immediately

3. Run the sample query above — no ETL, no pipeline maintenance

Questions about this feed? Contact us at [e-mail].

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