ACO agreement start date.
Format/Values:  Date
More Information available at:  Overview of Shared Savings Program Financial Models
Format/Values:  Num
0/1 flag; =1 if ACO selected Track 2 (two-sided shared savings / losses model);  otherwise 0 (ACO selected Track 1 (one-sided shared savings model)).
Total number of short term acute care readmissions (all-cause 30 day) per 1,000 discharges in CY2013.
More Information available at:  Shared Savings Program 2013 Quality Reporting Documentation
During PY1 Final, quality reporting is pay for reporting for all ACOs. 100% for complete and accurate reporting, otherwise 0%.  For 2012 starters, quality score must be 100% in both 2012 and 2013 in order to be eligible for earned performance payment.
Set at 50% for Track 1 ACOs and 60% for Track 2 ACOs in PY1 Final.
Total number of provider visits within 30 days of discharge from a short term acute care hospital per 1,000 discharges in CY2013.
Total number of discharges for bacterial pneumonia per 1,000 person years in CY2013.
More Information available at:  Medicare Shared Savings Program Shared Savings and Losses and Assignment Methodology
Total expenditures per assigned ESRD beneficiary in CY2013.
Total expenditures per assigned DISABLED beneficiary in CY2013.
Total expenditures per assigned AGED/NON-DUAL beneficiary in CY2013.
Total expenditures per assigned AGED/DUAL beneficiary in CY2013.
Total number of discharges from a skilled nursing facility per 1,000 person years in CY2013.
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 CY2013.
Total number of magnetic resonance imaging (MRI) events per 1,000 person years in CY2013.
More Information available at:  Medicare Shared Savings Program and Rural Providers
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 CY2013.
Total number of primary care services per 1,000 person years in CY2013.
Total number of primary care services provided by a specialist per 1,000 person years in CY2013.
Total number of primary care services provided by a primary care physician (PCP) per 1,000 person years in CY2013.
Total number of visits to an emergency department (ED) that result in an inpatient stay per 1,000 person years in CY2013.
Total number of visits to an outpatient emergency department (ED) per 1,000 person years in CY2013.
Total number of computed tomography (CT) events per 1,000 person years in CY2013.
The ACO's share of losses for Track 2 ACOs whose losses equaled or exceeded their minimum loss rate (flat 2%). This amount accounts for the application of the ACO's final loss sharing rate (which is equal to 1 minus the final sharing rate and does not exceed 60%) based on quality performance. Only for Track 2 ACOs.
More Information available at:  Changes in ACO participants and ACO providers/suppliers during the Agreement Period
Total number of physician specialists that 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).
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.
Total number of primary care physicians (PCPs) that 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).
Total number of physician assistants that 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).
Total number of nurse practitioners that 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).
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.
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.
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.
Total number of clinical nurse specialists that 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).
Total number of Method II Critical Access Hospitals participating in the ACO in the performance period. Based on the ACO's certified participant list used in financial reconciliation.
Total number of assigned beneficiaries, Non-Hispanic White (Race=1) in CY2013.
Total number of assigned beneficiaries, Other (Race=0,3,~) in CY2013.
Total number of assigned beneficiaries, North American Native (Race=6) in CY2013.
Total number of assigned beneficiaries, Hispanic (Race=5) in CY2013.
Total number of assigned beneficiaries, Black (Race=2) in CY2013.
Total number of assigned beneficiaries, Asian (Race=4) in CY2013.
Total number of assigned beneficiaries, male (Gender=1) in CY2013.
Total number of assigned beneficiaries, female (Gender=2) in CY2013.
Total number of assigned beneficiaries, age 85+ in CY2013; age calculated as of 1/1/2013.
Total number of assigned beneficiaries, age 75-84 in CY2013; age calculated as of 1/1/2013.
Total number of assigned beneficiaries, age 65-74 in CY2013; age calculated as of 1/1/2013.
Total number of assigned beneficiaries, age 0-64 in CY2013; age calculated as of 1/1/2013.
Number of assigned beneficiaries with ESRD enrollment type for CY2013 adjusted for the total number of months that each beneficiary was classified as ESRD; Number of ESRD person months divided by 12.
Number of assigned beneficiaries with Disabled enrollment type for CY2013 adjusted for the total number of months that each beneficiary was classified as Disabled; Number of Disabled person months divided by 12.
Number of assigned beneficiaries with Aged/Non-dual enrollment type for CY2013 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 of assigned beneficiaries with Aged/Dual enrollment type for CY2013 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 of assigned beneficiaries for CY2013 adjusted downwards for beneficiaries with less than a full 12 months of eligibility ; Number of person months divided by 12.
Number of assigned beneficiaries for the PY1 Final performance period. For 2012 starters, the number of unique assigned beneficiaries assigned in either the interim period (6 or 9-months of CY2012) or in CY2013.
Minimum rate of savings an ACO must achieve in order to share savings. For Track 1 ACOs, determined based on number of assigned beneficiaries. For Track 2 ACOs, always equal to 2.00%.
Minimum rate of losses allowed before an ACO shares losses. For Track 2 ACOs, always equal to -2.00%. Field populated only for Track 2 ACOs.
0/1 flag; =1 if ACO elected Interim Payment; otherwise 0; Field populated for ACOs with 2012 start dates only.
Quality performance sharing rate multiplied by quality score. The percentage of savings an ACO shares if the ACO is eligible for shared savings.
The ACO's share of savings for ACOs whose savings equaled or exceeded their minimum savings rates, and who were eligible for a performance payment because they met the program's quality performance standard. This amount accounts for the application of the ACO's final sharing rate based on quality performance, as well as the reduction in performance payment due to sequestration. This amount does not account for repayment of advance payments.
Total number of discharges for chronic obstructive pulmonary disease (COPD) or asthma per 1,000 person years in CY2013.
Total number of discharges for congestive heart failure (CHF) per 1,000 person years in CY2013.
Per capita expenditures for services in a skilled nursing facility setting for assigned beneficiaries in CY2013.
Per capita expenditures for physician/supplier services for assigned beneficiaries in CY2013.
Per capita expenditures on acute care inpatient services in a short term acute care setting for assigned beneficiaries in CY2013.
Per capita expenditures on inpatient services in a rehabilitation facility setting for assigned beneficiaries in CY2013.
Per capita expenditures on inpatient services in a psychiatric hospital setting for assigned beneficiaries in CY2013.
Per capita expenditures for other inpatient services for assigned beneficiaries in CY2013.
Per capita expenditures on inpatient services in a long term care setting for assigned beneficiaries in CY2013.
Per capita expenditures on inpatient services for assigned beneficiaries in CY2013.
Per capita expenditures on hospice services for assigned beneficiaries in CY2013.
Per capita expenditures for home health services for assigned beneficiaries in CY2013.
Per capita expenditures on durable medical equipment for assigned beneficiaries in CY2013.
Per capita expenditures for ambulance services for assigned beneficiaries in CY2013.
Total benchmark expenditures minus total performance year expenditures. Does not account for the application of the ACO's final sharing rate based on quality performance or reduction for sequestration.
More Information available at:  Advance Payment ACO Model
Maximum amount of advance payment available for recoupment at PY1 Final. Total of all advance payment disbursements prior to July 23, 2014. Field populated only for ACOs with Adv_Pay=1.
0/1 flag; =1 if ACO elected Advanced Payment;  otherwise 0.
Total number of short term acute care hospital discharges per 1,000 person years in CY2013.
Total number of inpatient rehabilitation facility (IRF) discharges per 1,000 person years in CY2013.
Total number of inpatient psychiatric facility (IPF) discharges per 1,000 person years in CY2013.
Total number of long term care hospital (LTCH) discharges per 1,000 person years in CY2013.
Total number of inpatient hospital discharges per 1,000 person years in CY2013.
Format/Values:  Axxxxx
Encrypted ACO Identifier.
Format/Values:  VarChar
Legal business name associated with the ACO.
Per capita expenditures multiplied by total person-years, PY1 Final.
Per capita benchmark expenditures multiplied by total person-years, PY1 Final.
Medicare Shared Savings Program Shared Savings and Losses and Assignment Methodology
For details on the methodology used to determine shared savings and losses, please visit:
Shared Savings Program on CMS.gov
For details on the Medicare Shared Savings Program, please visit:
For July 2012 starters (87 ACOs) all variables are for the entire 18-month period (7/1/2012- 12/31/2013) which is their PY1 Final performance period, unless otherwise noted.
For April 2012 starters ( 27 ACOs) all variables are for the entire 21- month period (4/1/2012- 12/31/2013) which is their PY1 Final performance period, unless otherwise noted.
For January 2013 starters (106 ACOs) all variables are for CY2013 (1/1/2013- 12/31/2013) which is their PY1 Final performance period.
aco2013 data set up by Jean Roth , jroth@nber.org , 16 May 2015