data.cms.gov

Ambulatory Specialty Model Participants

The Ambulatory Specialty Model (ASM) Participants dataset contains information on clinicians that are required to participate in ASM, including their names, National Provider Identifiers (NPI), organization name, their...

Freshness

Last posted
Period covered
Jan 1, 2026 to Dec 31, 2026
Update frequency
Annually

Dates as CMS lists them in its catalog.

Columns 36

ColumnWhat it meansType
NPINPINumeric field indicating the National Provider Identifier (NPI) of the ASM participant.string
NPI First NameFIRST_NAMEPlain text field containing the first name of the ASM participant.string
NPI Middle NameMIDDLE_NAMEPlain text field containing the middle name of the ASM participant.string
NPI Last NameLAST_NAMEPlain text field containing the last name of the ASM participant.string
Organization NameORGANIZATION_LEGAL_NAMEPlain text field containing the organization name associated with the ASM participant.string
CohortASM_COHORTPlain text field containing the name of the ASM participant's cohort, either heart failure or low back pain.string
CY2027 Performance YearASM_CY27_PARTICIPANTPlain text field where a "Yes" or "No" indicates whether the NPI must meet ASM's requirements for the 2027 ASM performance year.string
CY 2027 CBSA/Metropolitan Division CodeASM_CY27_CBSA_CODENumeric field indicating the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2027 ASM performance year.number
CY 2027 CBSA/Metropolitan Division NameASM_CY27_CBSA_NAMEPlain text field containing the name of the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2027 ASM performance year.string
CY 2027 Service Location StateASM_CY27_SERVICE_LOCATION_STATEPlain text field containing the two-letter state abbreviation of the state in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2027 ASM performance year.string
CY2027 Specialty TypeASM_CY27_SPECIALTYPlain text field that indicates the specialty type of the ASM participant determined by CMS for the 2027 ASM performance year.string
CY2027 Small PracticeASM_CY27_SMALL_PRACTICEPlain text field that indicates with a "Yes" or "No" whether the NPI is part of a small practice (15 or fewer clinicians within the NPI's associated Taxpayer Identification Number [TIN]) for the 2027 ASM performance year.string
CY2028 Performance YearASM_CY28_PARTICIPANTPlain text field where a "Yes" or "No" indicates whether the NPI must meet ASM's requirements for the 2028 ASM performance year.string
CY 2028 CBSA/Metropolitan Division CodeASM_CY28_CBSA_CODENumeric field indicating the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2028 ASM performance year.number
CY 2028 CBSA/Metropolitan Division NameASM_CY28_CBSA_NAMEPlain text field containing the name of the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2028 ASM performance year.string
CY 2028 Service Location StateASM_CY28_SERVICE_LOCATION_STATEPlain text field containing the two-letter state abbreviation of the state in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2028 ASM performance year.string
CY2028 Specialty TypeASM_CY28_SPECIALTYPlain text field that indicates the specialty type of the ASM participant determined by CMS for the 2028 ASM performance year.string
CY2028 Small PracticeASM_CY28_SMALL_PRACTICEPlain text field that indicates with a "Yes" or "No" whether the NPI is part of a small practice (15 or fewer clinicians within the NPI's associated Taxpayer Identification Number [TIN]) for the 2028 ASM performance year.string
CY2029 Performance YearASM_CY29_PARTICIPANTPlain text field where a "Yes" or "No" indicates whether the NPI must meet ASM's requirements for the 2029 ASM performance year.string
CY 2029 CBSA/Metropolitan Division CodeASM_CY29_CBSA_CODENumeric field indicating the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2029 ASM performance year.number
CY 2029 CBSA/Metropolitan Division NameASM_CY29_CBSA_NAMEPlain text field containing the name of the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2029 ASM performance year.string
CY 2029 Service Location StateASM_CY29_SERVICE_LOCATION_STATEPlain text field containing the two-letter state abbreviation of the state in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2029 ASM performance year.string
CY2029 Specialty TypeASM_CY29_SPECIALTYPlain text field that indicates the specialty type of the ASM participant determined by CMS for the 2029 ASM performance year.string
CY2029 Small PracticeASM_CY29_SMALL_PRACTICEPlain text field that indicates with a "Yes" or "No" whether the NPI is part of a small practice (15 or fewer clinicians within the NPI's associated Taxpayer Identification Number [TIN]) for the 2029 ASM performance year.string
CY2030 Performance YearASM_CY30_PARTICIPANTPlain text field where a "Yes" or "No" indicates whether the NPI must meet ASM's requirements for the 2030 ASM performance year.string
CY 2030 CBSA/Metropolitan Division CodeASM_CY30_CBSA_CODENumeric field indicating the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2030 ASM performance year.number
CY 2030 CBSA/Metropolitan Division NameASM_CY30_CBSA_NAMEPlain text field containing the name of the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2030 ASM performance year.string
CY 2030 Service Location StateASM_CY30_SERVICE_LOCATION_STATEPlain text field containing the two-letter state abbreviation of the state in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2030 ASM performance year.string
CY2030 Specialty TypeASM_CY30_SPECIALTYPlain text field that indicates the specialty type of the ASM participant determined by CMS for the 2030 ASM performance year.string
CY2030 Small PracticeASM_CY30_SMALL_PRACTICEPlain text field that indicates with a "Yes" or "No" whether the NPI is part of a small practice (15 or fewer clinicians within the NPI's associated Taxpayer Identification Number [TIN]) for the 2030 ASM performance year.string
CY2031 Performance YearASM_CY31_PARTICIPANTPlain text field where a "Yes" or "No" indicates whether the NPI must meet ASM's requirements for the 2031 ASM performance year.string
CY 2031 CBSA/Metropolitan Division CodeASM_CY31_CBSA_CODENumeric field indicating the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2031 ASM performance year.number
CY 2031 CBSA/Metropolitan Division NameASM_CY31_CBSA_NAMEPlain text field containing the name of the Core-based Statistical Area (CBSA) or Metropolitan Division code in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2031 ASM performance year.string
CY 2031 Service Location StateASM_CY31_SERVICE_LOCATION_STATEPlain text field containing the two-letter state abbreviation of the state in which CMS determines the ASM participant's service location for purposes of determining eligibility for ASM for the 2031 ASM performance year.string
CY2031 Specialty TypeASM_CY31_SPECIALTYPlain text field that indicates the specialty type of the ASM participant determined by CMS for the 2031 ASM performance year.string
CY2031 Small PracticeASM_CY31_SMALL_PRACTICEPlain text field that indicates with a "Yes" or "No" whether the NPI is part of a small practice (15 or fewer clinicians within the NPI's associated Taxpayer Identification Number [TIN]) for the 2031 ASM performance year.string

At a glance

Catalog
data.cms.gov
Publisher
Office of Enterprise Data and Analytics (OEDA)
Rows
5,556
Columns
36
State column
ASM_CY27_SERVICE_LOCATION_STATE
Topics
Hospitals, Quality and ratings, ACOs and payment models
Contact
AmbulatorySpecialtyModel@cms.hhs.gov

API

Free, no key needed. This request returns the first 10 rows as JSON:

https://data.cms.gov/data-api/v1/dataset/175d576d-0568-4ac2-aec5-d77f3ee02205/data?size=10

To keep only one state, filter on the ASM_CY27_SERVICE_LOCATION_STATE column.

CMS's description

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

Methodology and other documents from CMS:

The summary at the top is the first sentence of this description. Record id cms:175d576d-0568-4ac2-aec5-d77f3ee02205. This record as JSON.

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