Name | Description | Type | Constraints |
---|

ACO_ID | Encrypted ACO Identifier. Identifier is consistent across performance years | string | - |

ACO_Name | ACO Doing Business As (DBA) or Legal Business Name (LBN) | string | - |

State | Assigned beneficiary state(s) of residence | string | - |

Start_Date | Agreement start date | date | - |

Track_1 | ACO selected Track 1 (one-sided shared savings model) or otherwise. | string | - |

Track_2 | ACO selected Track 2 (two-sided shared savings / losses model) or otherwise. | string | - |

Is_Participate_In_Advance_Payment_Model | If ACO participates in Advance Payment Model=true; otherwise=false | boolean | - |

Total_Assigned_Beneficiaries | Number of assigned beneficiaries, performance year | number | level : Nominal |

Savings_Rate | Total Benchmark Expenditures Minus Assigned Beneficiary Expenditures as a percent of Total Benchmark Expenditures | number | level : Ratio |

Minimum_Savings_Rate_Percent | | number | level : Ratio |

Benchmark_Minus_Expenditures | Total benchmark Expenditures Minus Assigned Beneficiary Expenditures | number | level : Ratio |

Generated_Total_Savings_or_Losses | Total savings or Total loss. | number | level : Ratio |

Earned_Shared_Savings_Payments_or_Owe_Losses | Total earned shared savings | number | level : Ratio |

Quality_Score | ACOs performance quality based on reporting | string | - |

Updated_Benchmark_Expenditures | Benchmark expenditures are risk-adjusted in the historical benchmark period and performance period to account for changes in the ACO's assigned populations over time. Updated benchmark also includes the projected absolute amount of growth in national per capita expenditures for Parts A and B services under the original fee-for-service program. | number | level : Ratio |

Historical_Benchmark | 3-year average historical benchmark, risk adjusted. Historical benchmark expenditures are risk-adjusted by applying risk ratios of the BY3 risk score divided by each year’s risk score to the BY1 and BY2 expenditures. | number | level : Ratio |

Total_Benchmark_Expenditures | Per capita benchmark (UpdatedBnchmk) multiplied by total person-years (N_AB_Year). | number | level : Ratio |

Total_Expenditures | Per capita performance year expenditures (Per_Capita_Exp_TOTAL) multiplied by total person-years (N_AB_Year). | number | level : Ratio |

Advance_Payment_Amount | | number | - |

Advance_Payment_Recoupment | Amount of advance payment actually recouped at PY14. Populated for advance payment ACOs that shared savings and is no greater than the maximum amount owed. | number | level : Ratio |

Quality_Sharing_Rate | Set at 50% for Track 1 ACOs and 60% for Track 2 ACOs. | number | level : Ratio |

Final_Sharing_Rate | Quality performance sharing rate (QualPerfShare) multiplied by quality score (QualScore). The percentage of savings an ACO shares if the ACO is eligible for shared savings. | number | level : Ratio |

Per_Capita_ESRD_Expenditures_In_Benchmark_Year_1 | Annualized, truncated, weighted mean total expenditures per ESRD assigned beneficiary person years in benchmark year 1. | number | level : Ratio |

Per_Capita_Disabled_Expenditures_In_Benchmark_Year_1 | Annualized, truncated, weighted mean total expenditures per DISABLED assigned beneficiary person years in benchmark year 1. | number | level : Ratio |

Per_Capita_Aged_or_Dual_Expenditures_In_Benchmark_Year_1 | Annualized, truncated, weighted mean total expenditures per AGED/DUAL assigned beneficiary person years in benchmark year 1. | number | level : Ratio |

Per_Capita_Aged_or_NonDual_Expenditures_In_Benchmark_Year_1 | Annualized, truncated, weighted mean total expenditures per AGED/NON-DUAL assigned beneficiary person years in benchmark year 1. | number | level : Ratio |

Per_Capita_ESRD_Expenditures_In_Benchmark_Year_2 | Annualized, truncated, weighted mean total expenditures per ESRD assigned beneficiary person years in benchmark year 2. | number | level : Ratio |

Per_Capita_Disabled_Expenditures_In_Benchmark_Year_2 | Annualized, truncated, weighted mean total expenditures per DISABLED assigned beneficiary person years in benchmark year 2. | number | level : Ratio |

Per_Capita_Aged_or_Dual_Expenditures_In_Benchmark_Year_2 | Annualized, truncated, weighted mean total expenditures per AGED/DUAL assigned beneficiary person years in benchmark year 2. | number | level : Ratio |

Per_Capita_Aged_or_NonDual_Expenditures_In_Benchmark_Year_2 | Annualized, truncated, weighted mean total expenditures per AGED/NON-DUAL assigned beneficiary person years in benchmark year 2. | number | level : Ratio |

Per_Capita_ESRD_Expenditures_In_Benchmark_Year_3 | Annualized, truncated, weighted mean total expenditures per ESRD assigned beneficiary person years in benchmark year 3. | number | level : Ratio |

Per_Capita_Disabled_Expenditures_In_Benchmark_Year_3 | Annualized, truncated, weighted mean total expenditures per DISABLED assigned beneficiary person years in benchmark year 3. | number | level : Ratio |

Per_Capita_Aged_or_Dual_Expenditures_In_Benchmark_Year_3 | Annualized, truncated, weighted mean total expenditures per DISABLED assigned beneficiary person years in benchmark year 3. | number | level : Ratio |

Per_Capita_Aged_or_NonDual_Expenditures_In_Benchmark_Year_3 | Annualized, truncated, weighted mean total expenditures per AGED/DUAL assigned beneficiary person years in benchmark year 3. | number | level : Ratio |

Per_Capita_ESRD_Expenditures_In_Performance_Year | Annualized, truncated, weighted mean total expenditures per ESRD assigned beneficiary person years in performance year. | number | level : Ratio |

Per_Capita_Disabled_Expenditures_In_Performance_Year | Annualized, truncated, weighted mean total expenditures per DISABLED assigned beneficiary person years in performance year. | number | level : Ratio |

Per_Capita_Aged_or_Dual_Expenditures_In_Performance_Year | Annualized, truncated, weighted mean total expenditures per AGED/DUAL assigned beneficiary person years in performance year. | number | level : Ratio |

Per_Capita_Aged_or_NonDual_Expenditures_In_Performance_Year | Annualized, truncated, weighted mean total expenditures per AGED/NON-DUAL assigned beneficiary person years in performance year. | number | level : Ratio |

Per_Capita_All_Expenditures_In_Performance_Year | Annualized, truncated, weighted mean total expenditures per assigned beneficiary person years in performance year. | number | level : Ratio |

Average_ESRD_HCC_Risk_Score_In_Benchmark_Year_1 | Mean final prospective CMS-HCC risk score for ESRD enrollment type in benchmark year 1, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Disabled_HCC_Risk_Score_In_Benchmark_Year_1 | Mean final prospective CMS-HCC risk score for DISABLED enrollment type in benchmark year 1, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_Dual_HCC_Risk_Score_In_Benchmark_Year_1 | Mean final prospective CMS-HCC risk score for AGED/DUAL enrollment type in benchmark year 1, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_NonDual_Hcc_Risk_Score_In_Benchmark_Year_1 | Mean final prospective CMS-HCC risk score for AGED/NON-DUAL enrollment type in benchmark year 1, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_ESRD_HCC_Risk_Score_In_Benchmark_Year_2 | Mean final prospective CMS-HCC risk score for ESRD enrollment type in benchmark year 2, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Disabled_HCC_Risk_Score_In_Benchmark_Year_2 | Mean final prospective CMS-HCC risk score for DISABLED enrollment type in benchmark year 2, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_Dual_HCC_Risk_Score_In_Benchmark_Year_2 | Mean final prospective CMS-HCC risk score for AGED/DUAL enrollment type in benchmark year 2, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_NonDual_HCC_Risk_Score_In_Benchmark_Year_2 | Mean final prospective CMS-HCC risk score for AGED/NON-DUAL enrollment type in benchmark year 2, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0.Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_ESRD_HCC_Risk_Score_In_Benchmark_Year_3 | Mean final prospective CMS-HCC risk score for ESRD enrollment type in benchmark year 3, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Disabled_HCC_Risk_Score_In_Benchmark_Year_3 | Mean final prospective CMS-HCC risk score for DISABLED enrollment type in benchmark year 3, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_Dual_HCC_Risk_Score_In_Benchmark_Year_3 | Mean final prospective CMS-HCC risk score for AGED/DUAL enrollment type in benchmark year 3, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_NonDual_HCC_Risk_Score_In_Benchmark_Year_3 | Mean final prospective CMS-HCC risk score for AGED/NON-DUAL enrollment type in benchmark year 3, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_ESRD_HCC_Risk_Score_In_Performance_Year | Mean final prospective CMS-HCC risk score for ESRD enrollment type in the performance year, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Disabled_HCC_Risk_Score_In_Performance_Year | Mean final prospective CMS-HCC risk score for DISABLED enrollment type in the performance year, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_Dual_HCC_Risk_Score_In_Performance_Year | Mean final prospective CMS-HCC risk score for AGED/DUAL enrollment type in the performance year, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

Average_Aged_or_NonDual_HCC_Risk_Score_In_Performance_Year | Mean final prospective CMS-HCC risk score for AGED/NON-DUAL enrollment type in the performance year, based on the applicable risk adjustment model for that year, renormalized so that the mean national FFS risk score equals 1.0. Risk scores for each enrollment type are renormalized to their own populations and thus are not on the same scale and not comparable. | number | level : Ratio |

ESRD_Person_Years_In_Benchmark_Year_3 | Number of assigned beneficiaries with ESRD enrollment type in benchmark year 3 adjusted for the total number of months that each beneficiary was classified as ESRD; Number of ESRD person-months divided by 12. | number | level : Ratio |

Disabled_Person_Years_In_Benchmark_Year_3 | Number of assigned beneficiaries with DISABLED enrollment type in benchmark year 3 adjusted for the total number of months that each beneficiary was classified as DISABLED; Number of DISABLED person-months divided by 12. | number | level : Ratio |

Aged_or_Dual_Person_Years_In_Benchmark_Year_3 | Number of assigned beneficiaries with AGED/DUAL enrollment type in benchmark year 3 adjusted for the total number of months that each beneficiary was classified as AGED/DUAL; Number of AGED/DUAL person-months divided by 12. | number | level : Ratio |

Aged_or_NonDual_Person_Years_In_Benchmark_Year_3 | Number of assigned beneficiaries with AGED/NON-DUAL enrollment type in benchmark year 3 adjusted for the total number of months that each beneficiary was classified as AGED/NON-DUAL; Number of AGED/NON-DUAL person-months divided by 12. | number | level : Nominal |

Total_Person_Years_In_Performance_Year | Number of assigned beneficiaries in performance year adjusted downwards for beneficiaries with less than a full 12 months of eligibility ; Number of person-months divided by 12. | number | level : Nominal |

ESRD_Person_Years_In_Performance_Year | Number of assigned beneficiaries with ESRD enrollment type in performance year adjusted for the total number of months that each beneficiary was classified as ESRD; Number of ESRD person-months divided by 12. | number | level : Ratio |

Disabled_Person_Years_In_Performance_Year | Number of assigned beneficiaries with DISABLED enrollment type in performance year adjusted for the total number of months that each beneficiary was classified as DISABLED; Number of DISABLED person-months divided by 12. | number | level : Ratio |

Aged_or_Dual_Person_Years_In_Performance_Year | Number of assigned beneficiaries with AGED/DUAL enrollment type in performance year adjusted for the total number of months that each beneficiary was classified as AGED/DUAL; Number of AGED/DUAL person-months divided by 12. | number | level : Ratio |

Aged_or_NonDual_Person_Years_In_Performance_Year | Number of assigned beneficiaries with AGED/NON-DUAL enrollment type in performance year adjusted for the total number of months that each beneficiary was classified as AGED/NON-DUAL; Number of AGED/NON-DUAL person-months divided by 12. | number | level : Ratio |

Total_Assigned_Beneficiaries_Age_0_to_64 | Total number of assigned beneficiaries, age 0-64 in performance year; age calculated as of 1/1/2014. Based on most current date of birth in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Age_65_to_74 | Total number of assigned beneficiaries, age 65-74 in performance year; age calculated as of 1/1/2014. Based on most current date of birth in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Age_75_to_84 | Total number of assigned beneficiaries, age 75-84 in performance year; age calculated as of 1/1/2014. Based on most current date of birth in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Age_Above85 | Total number of assigned beneficiaries, age 85+ in performance year; age calculated as of 1/1/2014. Based on most current date of birth in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Female | Total number of assigned beneficiaries, female (Gender=2) in performance year. Based on most current gender in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Male | Total number of assigned beneficiaries, male (Gender=1) in performance year. Based on most current gender in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_NonHispanic_White | Total number of assigned beneficiaries, Non-Hispanic White (Race=1) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Black | Total number of assigned beneficiaries, Black (Race=2) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Asian | Total number of assigned beneficiaries, Asian (Race=4) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Hispanic | Total number of assigned beneficiaries, Hispanic (Race=5) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_North_American_Native | Total number of assigned beneficiaries, North American Native (Race=6) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Assigned_Beneficiaries_Other | Total number of assigned beneficiaries, Other (Race=0,3,~) in performance year. Based on most current race in Medicare records. | number | level : Ratio |

Total_Inpatient_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for inpatient services for assigned beneficiaries in performance year. | number | level : Ratio |

Short_Term_Acute_Care_Hospital_IPPR_or_CAH_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for acute care inpatient services in a short term acute care (Inpatient Prospective Payment System (IPPS) or Critical Access Hospital (CAH)) setting for assigned beneficiaries in performance year. | number | level : Ratio |

Long_Term_Care_Hospital_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for inpatient services in a long term care setting for assigned beneficiaries in performance year. | number | level : Ratio |

Inpatient_Rehabilitation_Facility_IRF_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for inpatient services in a rehabilitation facility or unit for assigned beneficiaries in performance year. | number | level : Ratio |

Inpatient_Psychiatric_Hospital_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for inpatient services in a psychiatric hospital facility or unit for assigned beneficiaries in performance year. | number | level : Ratio |

Hospice_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for hospice services for assigned beneficiaries in performance year. Hospice claims are identified by claim type code 50. | number | level : Ratio |

Skilled_Nursing_Facility_Or_Unit_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for services in a skilled nursing facility (SNF) setting for assigned beneficiaries in performance year. SNF claims are identified by claim type codes 20 and 30. | number | level : Ratio |

Other_Inpatient_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for other inpatient services in a short term acute care setting for assigned beneficiaries in performance year. Inpatient claims are identified by claim type code 60. | number | level : Ratio |

Hospital_Outpatient_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for hospital outpatient services for assigned beneficiaries in performance year. Hospital outpatient claims are identified by claim type code 40. | number | level : Ratio |

Physician_or_Supplier_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for Part B physician/supplier (Carrier) services for assigned beneficiaries in performance year. | number | level : Ratio |

Ambulance_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for ambulance services for assigned beneficiaries in performance year. | number | level : Ratio |

Home_Health_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for home health agency services for assigned beneficiaries in performance year. Home health claims are identified by claim type code 10. | number | level : Ratio |

Durable_Medical_Equipment_Expenditures | Annualized, truncated, weighted mean expenditures per assigned beneficiary person years for durable medical equipment (DME) for assigned beneficiaries in performance year. DME claims are identified by claim type codes 81 and 82. | number | level : Ratio |

Inpatient_Hospital_Discharges | Total number of inpatient hospital discharges per 1,000 person-years in performance year. | number | level : Ratio |

Short_Term_Acute_Care_Hospital_Discharges | Total number of short term acute care hospital discharges per 1,000 person-years in performance year. | number | level : Ratio |

LTCH_Discharges | Total number of long term care hospital (LTCH) discharges per 1,000 person-years in performance year. | number | level : Ratio |

IRF_Discharges | Total number of inpatient rehabilitation facility (IRF) discharges per 1,000 person-years in performance year. | number | level : Ratio |

IPF_Discharges | Total number of inpatient psychiatric facility (IPF) discharges per 1,000 person-years in performance year. | number | level : Ratio |

CHF_Discharges | Total number of discharges for congestive heart failure (CHF) per 1,000 person-years in performance year. | number | level : Ratio |

COPD_or_Asthma_Discharges | Total number of discharges for chronic obstructive pulmonary disease (COPD) or asthma per 1,000 person-years in performance year. | number | level : Ratio |

Bacterial_Pneumonia_Discharges | Total number of discharges for bacterial pneumonia per 1,000 person-years in performance year. | number | level : Ratio |

Short_Term_Acute_Care_Readmissions_All_Cause_30_Day | Rate of short-term acute-care hospital readmissions within 30 days of discharge from a short-term acute-care hospital (including critical access hospitals) per 1,000 discharges among eligible beneficiaries assigned to the ACO in performance year. | number | level : Ratio |

Post_Discharge_Provider_Visits_30_Day | Rate of provider visits within 30 days of discharge from a short-term acute-care hospital (including critical access hospitals) per 1,000 discharges among eligible beneficiaries assigned to the ACO in performance year. | number | level : Ratio |

Skilled_Nursing_Facility_Discharges | Total number of discharges from a skilled nursing facility per 1,000 person-years in performance year. | number | level : Ratio |

Outpatient_ED_Visits | Total number of visits to an outpatient emergency department (ED) per 1,000 person-years in performance year. | number | level : Ratio |

Inpatient_ED_Visits | Total number of visits to an emergency department (ED) that result in an inpatient stay per 1,000 person-years in performance year. | number | level : Ratio |

CT_Events | Total number of computed tomography (CT) events per 1,000 person-years in performance year. | number | level : Ratio |

MRI_Events | Total number of magnetic resonance imaging (MRI) events per 1,000 person-years in performance year. | number | level : Ratio |

Primary_Care_Services | Total number of primary care services per 1,000 person-years in performance year. | number | level : Ratio |

Primary_Care_Services_With_PCP | Total number of primary care services provided by a primary care physician (PCP) per 1,000 person-years in performance year. | number | level : Ratio |

Primary_Care_Services_With_A_Specialist | Total number of primary care services provided by a specialist per 1,000 person-years in performance year. | number | level : Ratio |

Primary_Care_Services_With_A_NP_or_PA_or_CNS | Total number of primary care services provided by a nurse practitioner (NP), physician's assistant (PA), or clinical nurse specialist (CNS) per 1,000 person-years in performance year. | number | level : Ratio |

Primary_Care_Services_With_A_FQHC_or_RHC | Total number of primary care services provided at a Federally Qualified Health Center (FQHC) or Rural Health Clinic (RHC) per 1,000 person-years in performance year. | number | level : Ratio |

Number_Of_CAH_IIS | Total number of Method II Critical Access Hospitals participating in the ACO in the performance period. | number | level : Ratio |

Number_Of_FQHCS | Total number of Federally Qualified Health Centers participating in the ACO in the performance period. Based on the ACO's certified participant list used in financial reconciliation and ACO-reported facility type. | number | level : Ratio |

Number_Of_RHCS | Total number of Rural Health Clinics participating in the ACO in the performance period. Based on the ACO's certified participant list used in financial reconciliation and ACO-reported facility type. | number | level : Ratio |

Number_Of_ETA_Hospitals | Total number of Electing Teaching Amendment Hospitals participating in the ACO in the performance period. Based on the ACO's certified participant list used in financial reconciliation and ACO-reported facility type. | number | level : Ratio |

Number_Of_Other_Facility_Types | Total number of other facilities participating in the ACO in the performance period. Based on the ACO's certified participant list used in financial reconciliation and ACO-reported facility type. | number | level : Ratio |

Number_Of_Participating_PCPs | Total number of primary care physicians (PCPs) who reassigned billing rights to an ACO participant in the performance period. Based on the ACO's certified participant list used in financial reconciliation and information in the Medicare Provider Enrollment, Chain, and Ownership System (PECOS). | number | level : Ratio |

Number_Of_Participating_Specialists | Total number of physician specialists who reassigned billing rights to an ACO participant in the performance period. Based on the ACO's certified participant list used in financial reconciliation and information in the Medicare Provider Enrollment, Chain, and Ownership System (PECOS). | number | level : Ratio |

Number_Of_Participating_Nurse_Practitioners | Total number of nurse practitioners who reassigned billing rights to an ACO participant in the performance period. Based on the ACO's certified participant list used in financial reconciliation and information in the Medicare Provider Enrollment, Chain, and Ownership System (PECOS). | number | level : Ratio |

Number_Of_Participating_Physician_Assistants | Total number of physician assistants who reassigned billing rights to an ACO participant in the performance period. Based on the ACO's certified participant list used in financial reconciliation and information in the Medicare Provider Enrollment, Chain, and Ownership System (PECOS). | number | level : Ratio |

Number_Of_Participating_Clinical_Nurse_Specialists | Total number of clinical nurse specialists who reassigned billing rights to an ACO participant in the performance period. Based on the ACO's certified participant list used in financial reconciliation and information in the Medicare Provider Enrollment, Chain, and Ownership System (PECOS). | number | level : Ratio |