John M Hollingsworth

Biographic Data

ID5533869
NAMEJohn M Hollingsworth
GIVEN NAMESJohn M
FAMILY NAMEHollingsworth
SIGNATUREHOLLINGSWORTH J M
AFFILIATIONSUniversity of Michigan
ORCID0000-0002-3372-9370
VERIFIEDYes
TOTAL WORKS16
TOTAL CITATIONS0
AUTHOR COUNT16
EDITOR COUNT0
FIRST PUBLICATION YEAR2008
LATEST PUBLICATION YEAR2022
H-INDEX0

  • Association of Primary Care Engagement in Value-Based Reform Programs With Health Services Outcomes: Participation and Synergies

    Open AccessJulia Adler-Milstein, Ariel Linden et al.ARTICLEJAMA Health Forum2022

    This longitudinal observational study found that participation by PCOs in single or multiple reform programs was associated with better performance for only a subset of health services outcomes. More consistent and larger synergies may be realized with improved alignment of program requirements and goals

  • Use of Preventive Care Services and Hospitalization Among Medicare Beneficiaries in Accountable Care Organizations That Exited the Shared Savings Program

    Open AccessYajuan Si, Nicholas M Moloci et al.ARTICLEJAMA Health Forum2022

    In this cohort study of Medicare beneficiaries, SSP exit was associated with modest declines in clinical quality. These findings were timely given recent SSP changes that could accelerate program exit

  • Exit Rates of Accountable Care Organizations That Serve High Proportions of Beneficiaries of Racial and Ethnic Minority Groups

    Open AccessSunny C Lin, Karen E Joynt Maddox et al.ARTICLEJAMA Health Forum2022

    The study results suggest that ACOs that served a higher proportion of beneficaries of racial and ethnic minority groups were more likely to exit the Medicare Shared Savings Program, partially because of serving patients with greater disease severity and complexity. These findings raise concerns about how current payment reform efforts may differentially affect racial and ethnic minority groups

  • Association of Medicare Beneficiary and Hospital Accountable Care Organization Alignment With Surgical Cost Savings

    Open AccessLindsey A Herrel, Phyllis Yan et al.ARTICLEJAMA Health Forum2022

    In this cohort study evaluating hospital and beneficiary ACO alignment and surgical spending, savings were noted for beneficiaries treated at hospitals in the same ACO. Allowing ACOs to encourage or require surgical procedures in their own hospitals could lower Medicare spending on surgery

  • Association Between Organizational Quality and Out-of-Network Primary Care Among Accountable Care Organizations That Care for High vs Low Proportions of Patients of Racial and Ethnic Minority Groups

    Open AccessShivani Bakre, Nicholas M Moloci et al.ARTICLEJAMA Health Forum2022

    This large cohort study found that quality performance among ACOs serving many patients of racial and ethnic minority groups was negatively associated with their level of out-of-network primary care

  • Physician Participation in Medicare Accountable Care Organizations and Spillovers in Commercial Spending

    Brady Post, Andrew M Ryan et al.ARTICLEMedical Care2019References: 7

    IMPORTANCE: The benefits of public payment policy may extend to private populations through "spillover" effects. If cost-saving efforts in Medicare also reduce costs among commercially insured patients, Medicare payment systems could be a versatile policy tool in future reform efforts. OBJECTIVES: To determine whether physicians who participated in a Medicare Accountable Care Organization (ACO) reduced spending among their commercial patients. DE…

  • Informal Clinical Integration in Medicare Accountable Care Organizations and Mortality Following Coronary Artery Bypass Graft Surgery

    Dennie Kim, Russell J Funk et al.ARTICLEMedical Care2019References: 20

    BACKGROUND: Accountable care organizations' (ACOs') focus on formal clinical integration to improve outcomes overlooks actual patterns of provider interactions around shared patients. OBJECTIVE: To determine whether such informal clinical integration relates to a health system's performance in an ACO. RESEARCH DESIGN: We analyzed national Medicare data (2008-2014), identifying beneficiaries who underwent coronary artery bypass grafting (CABG). Af…

  • Identifying Natural Alignments Between Ambulatory Surgery Centers and Local Health Systems: Building Broader Communities of Surgical Care

    Russell J Funk, J Owen-Smith et al.ARTICLEMedical Care2017References: 20

    OBJECTIVE: To develop and compare methods for identifying natural alignments between ambulatory surgery centers (ASCs) and hospitals that anchor local health systems. MEASURES: Using all-payer data from Florida's State Ambulatory Surgery and Inpatient Databases (2005-2009), we developed 3 methods for identifying alignments between ASCS and hospitals. The first, a geographic proximity approach, used spatial data to assign an ASC to its nearest hos…

  • Understanding Treatment Disconnect and Mortality Trends in Renal Cell Carcinoma Using Tumor Registry Data

    Marc C Smaldone, Brian Egleston et al.ARTICLEMedical Care2017References: 21

    BACKGROUND AND OBJECTIVES: The paradoxical rise in overall and cancer-specific mortality despite increased detection and treatment of renal cell carcinoma (RCC) is termed "treatment disconnect." We reassess this phenomenon by evaluating impact of missing data and rising incidence on mortality trends. RESEARCH DESIGN, SUBJECTS, AND MEASURES: Using Surveillance, Epidemiology, and End Results data, we identified patients with RCC diagnosis from 1973…

  • Validation of a Medicare Claims-based Algorithm for Identifying Freestanding Ambulatory Surgery Centers

    John M Hollingsworth, Rodney L Dunn et al.ARTICLEMedical Care2016References: 12

    BACKGROUND AND OBJECTIVE: With visits to ambulatory surgery centers (ASCs) on the rise, accountability in the care provided by these facilities and the surgeons who staff them is required. This requires the ability to measure and monitor ASC-based care over time. For this reason, we developed and validated a claims-based algorithm to identify ASCs. RESEARCH DESIGN: Using a 20% sample of Medicare claims (2002-2008), we developed 3 ASC definitions.…

  • Differences Between Physician Social Networks for Cardiac Surgery Serving Communities With High Versus Low Proportions of Black Residents

    John M Hollingsworth, Russell J Funk et al.ARTICLEMedical Care2015References: 37

    BACKGROUND: Compared with white patients, black patients are more likely to undergo cardiac surgery at low-quality hospitals, even when they live closer to high-quality ones. Opportunities for organizational interventions to alleviate this problem remain elusive. OBJECTIVES: To explore physician isolation in communities with high proportions of black residents as a factor contributing to racial disparities in access to high-quality hospitals for …

  • Ambulatory Surgery Centers and Outpatient Procedure Use Among Medicare Beneficiaries

    Brent K Hollenbeck, Rodney L Dunn et al.ARTICLEMedical Care2014References: 13

    BACKGROUND: There has been a strong push to move outpatient surgery from hospital settings to ambulatory surgery centers (ASCs). Despite the efficiency advantages of ASCs, many are concerned that these facilities could increase overall utilization. OBJECTIVE: To assess the impact of ASC opening on rates of outpatient surgery. DESIGN: This was a retrospective cohort study of Medicare beneficiaries undergoing outpatient surgery between 2001 and 201…

  • Identifying Better Practices for Early-stage Bladder Cancer

    John M Hollingsworth, Yun S Zhang et al.ARTICLEMedical Care2011References: 14

    BACKGROUND: Practice guidelines for nonmuscle invasive (ie, early stage) bladder cancer are ambiguous, resulting in substantial practice variation without a clear patient benefit. OBJECTIVES: To profile urologist practice styles and empirically derive better patterns of use for common bladder cancer services. RESEARCH DESIGN: Retrospective cohort. SUBJECTS: Elderly patients diagnosed with early-stage bladder cancer between January 1, 1992 and Dec…

  • Specialty Care and the Patient-Centered Medical Home

    John M Hollingsworth, Sanjay Saint et al.ARTICLEMedical Care2011References: 19

    BACKGROUND: The medical home's success depends, in part, on the degree to which primary care physicians (PCPs) and specialists collaborate to create "medical neighborhoods" based on collective accountability. Such collaboration may require a new equilibrium in chronic disease care, with some of the routine follow-up currently provided by specialists reallocated to PCPs and their medical home teams. OBJECTIVES: To measure the care delivered by spe…

  • Physician Ownership of Ambulatory Surgery Centers and Practice Patterns for Urological Surgery: Evidence from the State of Florida

    Seth A Strope, Stephanie Daignault et al.ARTICLEMedical Care2009References: 25

    OBJECTIVE: To evaluate the relationship between ownership and use of ambulatory surgical centers (ASCs). METHODS: From 1998 through 2002, ambulatory surgical discharges for procedures within the genitourinary system were abstracted from the Florida State Ambulatory Surgery Database. State-wide utilization rates for ambulatory surgery were calculated by physician-level ownership (using an empirically-derived, externally-validated method) and finan…

  • Understanding Variation in the Adoption of a New Technology in Surgery

    John M Hollingsworth, Sarah L Krein et al.ARTICLEMedical Care2008References: 34

    BACKGROUND: Despite data supporting the superiority of laparoscopy over conventional surgery for donor nephrectomy, prior work reveals that this technology's adoption has been slow. However, the underlying cause for its gradual adoption remains unclear. For this reason, a multilevel analysis was conducted using a population-based cohort to evaluate the amount of variation in laparoscopic donor nephrectomy use attributable to the individual, provi…