data.cms.gov

Next Generation Accountable Care Organization Model Data

The Next Generation Accountable Care Organization (NGACO) dataset includes summary‑level information on organizational performance, including aligned beneficiary counts, spending benchmarks, performance‑year...

Freshness

Last posted
Period covered
Jan 1, 2021 to Dec 31, 2021
Update frequency
Annually

Dates as CMS lists them in its catalog.

Columns 36

ColumnWhat it meansType
Accountable Care Organization IdentifierACO_IDACO IDstring
Accountable Care Organization NameACO_NAMEACO namestring
Performance YearPERF_YRstring
ACO Population-Based Payment ElectionPBP_ELECTIONACO elected Population-Based Paymentstring
Risk ArrangementRISK_ARRANGEMENTPercentage of Gross Savings or Losses shared by an NGACO. The Risk Arrangement can be either Partial Risk (80%) or Full Risk (100%).string
Performance Year Aligned Beneficiary CountBENE_CTNumber of Aligned Beneficiaries in Performance Yearnumber
Performance Year Eligible Months for Aligned BeneficiariesMNTH_PYEligible months accrued by Aligned Beneficiaries in Performance Yearnumber
Benchmark ExpenditureBNMRK_EXPNDnumber
Performance Year ExpenditurePERF_YR_EXPNDnumber
Gross Savings (Loss)GROSS_SAVINGSGross Savings (Loss) - Benchmark less Performance Year Expenditurenumber
Shared Savings (Loss)SHARED_SAVINGSnumber
Quality ScoreQUAL_SCREQuality Score (included as a %)number
Eligible Months Aged & Disabled Base Year 1 ExperienceMNTH_AD_BY1Eligible Months accruing to Aged & Disabled Benchmark in Base Year 1number
Expenditure Aged & Disabled Base Year 1 ExperienceEXPND_AD_BY1Base Year Expenditure 1 for Aged & Disabled Experiencenumber
Risk Score Aged & Disabled Base Year 1 ExperienceRISK_SCRE_AD_BY1Base year 1 Risk Score for Aged & Disabled Experiencenumber
Eligible Months Aged & Disabled Base Year 2 ExperienceMNTH_AD_BY2Eligible Months accruing to Aged & Disabled Benchmark in Base Year 2number
Expenditure Aged & Disabled Base Year 2 ExperienceEXPND_AD_BY2Base Year Expenditure 2 for Aged & Disabled Experiencenumber
Risk Score Aged & Disabled Base Year 2 ExperienceRISK_SCRE_AD_BY2Base year 2 Risk Score for Aged & Disabled Experiencenumber
Risk Score Aged & Disabled Performance Year ExperienceRISK_SCRE_AD_PYPerformance Year Risk Score for Aged & Disabled Experiencenumber
Eligible Months ESRD Base Year 1 ExperienceMNTH_ESRD_BY1Eligible Months accruing to ESRD Benchmark in Base Year 1number
Expenditure ESRD Base Year 1 ExperienceEXPND_ESRD_BY1Base Year 1 Expenditure for ESRD Experiencenumber
Risk Score ESRD Base Year 1 ExperienceRISK_SCRE_ESRD_BY1Base year 1 Risk Score for ESRD Experiencenumber
Eligible Months ESRD Base Year 2 ExperienceMNTH_ESRD_BY2Eligible Months accruing to ESRD Benchmark in Base Year 2number
Expenditure ESRD Base Year 2 ExperienceEXPND_ESRD_BY2Base Year 2 Expenditure for ESRD Experiencenumber
Risk Score ESRD Base Year 2 ExperienceRISK_SCRE_ESRD_BY2Base year 2 Risk Score for ESRD Experiencenumber
Risk Score ESRD Performance Year ExperienceRISK_SCRE_ESRD_PYPerformance Year Risk Score for ESRD Experiencenumber
Home Health Expenditure (NCH 10)EXPND_NCH10Home Health Expenditure (National Claims History Claim Type 10)number
Skilled Nursing Facility Expenditure (NCH 20)EXPND_NCH20SNF Expenditure (NCH Claim Type 20)number
Skilled Nursing Facility/Distinct Part Unit Expenditure (NCH 30)EXPND_NCH30SNF/DPU Expenditure (NCH Claim Type 30)number
Outpatient Expenditure (NCH 40)EXPND_NCH40Outpatient Expenditure (NCH Claim Type 40)number
Hospice Expenditure (NCH 50)EXPND_NCH50Hospice Expenditure (NCH Claim Type 50)number
Inpatient Expenditure (NCH 60)EXPND_NCH60Inpatient Expenditure (NCH Claim Type 60)number
Professional Claims Expenditure (NCH 71)EXPND_NCH71Professional Claims Expenditure (NCH Claim Type 71)number
Professional Claims/Other Expenditure (NCH 72)EXPND_NCH72Professional Claims/Other Expenditure (NCH Claim Type 72)number
Durable Medical Equipment Regional Carrier/Durable Medical Equipment, Prosthetics, Orthotics, and Supplies Expenditure (NCH 81)EXPND_NCH81DMERC/DMEPOS Expenditure (NCH Claim Type 81)number
Durable Medical Equipment Regional Carrier/Other Expenditure (NCH 82)EXPND_NCH82DMERC/Other Expenditure (NCH Claim Type 82)number

At a glance

Catalog
data.cms.gov
Publisher
Office of Enterprise Data and Analytics (OEDA)
Rows
35
Columns
36
State column
None found
Topics
ACOs and payment models, Spending and use of services, Quality and ratings
Contact
cmmi-dataset-support@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/041d68a9-3212-42f3-89d5-b23e82103576/data?size=10

Versions 6

The newest version is the one linked above. Older releases stay on the official site.

  • 2021-12-01posted Mar 27, 2026
  • 2020-12-01posted Mar 27, 2026
  • 2019-12-01posted Mar 27, 2026
  • 2018-12-01posted Mar 27, 2026
  • 2017-12-01posted Mar 27, 2026
  • 2016-12-01posted Mar 27, 2026

CMS's description

The Next Generation Accountable Care Organization (NGACO) dataset includes summary‑level information on organizational performance, including aligned beneficiary counts, spending benchmarks, performance‑year expenditures, shared savings or losses, quality performance, and high‑level breakdowns of Medicare service‑category spending.

Methodology and other documents from CMS:

The summary at the top is the first sentence of this description. Record id cms:041d68a9-3212-42f3-89d5-b23e82103576. This record as JSON.

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