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Arlene Ash, PhD, is Professor and Division Chief for Biostatistics and Health Services Research in the Department of Population and Quantitative Health Sciences at the University of Massachusetts Chan Medical School, and an internationally recognized methods expert in health services research. She pioneered tools for using administrative data to monitor and manage health care delivery systems, including those now used by the US Medicare program. In 1996, she co-founded DxCG, Inc. (now a part of Cotiviti) to promote “fair and efficient health care” via predictive software, and received AcademyHealth’s 2008 HSR Impact Award (“Risk-Based Predictive Modeling”). She was one of six appointees to the COPSS-CMS white paper project: “Statistical Issues in Assessing Hospital Performance.” Dr. Ash's UMass Chan team helps MassHealth incorporate social determinants of health into Medicaid/CHIP global payments. Her over 200 research publications reflect long-standing interests in gender, age, and racial disparities and quality, equity, and efficiency in health care financing and delivery.


American Statistical Association’s Committee on Scientific and Public Affairs (2003-present), Chair of its Subcommittee on Electoral Integrity (2004-2009). Founding member of two health centers, Chicago (1973-1976) Board of directors, Fenway Community Development Corporation (1981-2003) and President (1991-1994) Cofounder (1996) of DxCG, Inc., a predictive modeling health informatics company. DxCG (sold in 2004) is now the science division of Verisk Health, Inc.

Peace Corps Volunteer (1967-69). Mathematics teaching. Mindanao State U, Philippines. Frequent lecturer on Women and Mathematics; encourager of young women to become mathematicians. Author of over 150 research publications. Fellow of the American Statistical Association and AcademyHealth. Recipient of numerous awards for work in statistical methods and applied research.

Academic Background:

Ph.D. University of Illinois, Chicago IL

M.S. Washington University, St Louis, MO

B.A. Harvard University, Cambridge, MA 


Arlene Ash picture faculty web pageArlene Ash is a  Ph.D.-level mathematician who has worked in medical schools as a health services research methodologist since 1984.  Her areas of special interest and expertise include: design of experiments, building and validating models for predicting health care costs, utilization and other health outcomes in populations, comparing quality outcomes across providers, and conducting research into the causes and correlates of health disparities. She writes and lectures about a wide range of methods issues in study design, analysis and reporting, and has frequently led studies to evaluate the relative contributions to health outcomes of individual medical and social risks, medical interventions, and system-level factors.


One or more keywords matched the following items that are connected to Ash, Arlene
Item TypeName
Academic Article The importance of comorbidities in explaining differences in patient costs.
Academic Article Refinements to the Diagnostic Cost Group (DCG) model.
Academic Article Diagnosis-based risk adjustment for Medicare capitation payments.
Academic Article Identifying pre- and postoperative predictors of cost and length of stay for coronary artery bypass surgery.
Academic Article Variations in the management of acute myocardial infarction. Importance of clinical measures of disease severity.
Academic Article Does diagnostic information contribute to predicting functional decline in long-term care?
Academic Article Hospital cost of complications associated with coronary artery bypass graft surgery.
Academic Article Risk selection in the Massachusetts State employee health insurance program.
Academic Article Adjusting Medicare capitation payments using prior hospitalization data.
Academic Article Patterns of use of common major procedures in medical care of older adults.
Academic Article Predicting pharmacy costs and other medical costs using diagnoses and drug claims.
Academic Article Healthcare costs and utilization for Medicare beneficiaries with Alzheimer's.
Academic Article Implications of comorbidity on costs for patients with Alzheimer disease.
Academic Article Illness severity and costs of admissions at teaching and nonteaching hospitals.
Academic Article Racial and ethnic differences in end-of-life costs: why do minorities cost more than whites?
Academic Article The business case for quality improvement: oral anticoagulation for atrial fibrillation.
Academic Article Admission MedisGroups score and the cost of hospitalizations.
Academic Article Measuring population health risks using inpatient diagnoses and outpatient pharmacy data.
Academic Article Finding future high-cost cases: comparing prior cost versus diagnosis-based methods.
Academic Article Can primary care visits reduce hospital utilization among Medicare beneficiaries at the end of life?
Concept Cost Allocation
Concept Costs and Cost Analysis
Concept Health Care Costs
Concept Cost-Benefit Analysis
Concept Hospital Costs
Concept Cost of Illness
Academic Article Bending the cost curve? Results from a comprehensive primary care payment pilot.
Academic Article Mispricing in the medicare advantage risk adjustment model.
Academic Article Trends in acute myocardial infarction hospitalizations: Are we seeing the whole picture?
Academic Article Contributions of Children With Multiple Chronic Conditions to Pediatric Hospitalizations in the United States: A Retrospective Cohort Analysis.
Academic Article A cardiovascular disease risk prediction algorithm for use with the Medicare current beneficiary survey.
Search Criteria
  • Costs and Cost Analysis