Skip Navigation

Faculty Directory

Hsien-Yen Chang, PhD

  • Associate Scientist

Departmental Affiliations

Center & Institute Affiliations

Contact Information

624 N. Broadway
Hampton House 682
Baltimore, Maryland 21205


Google Scholar
Publons (Reviewer Record)

View Current Courses


PhD, Johns Hopkins Bloomberg School of Public Health, 2008
MHS, Johns Hopkins Bloomberg School of Public Health, 2006
MS, Harvard School of Public Health, 2003
MS, National Yang-Ming University, 1997
BS, National Taiwan University, 1995


Risk adjustment and its applications


Opioid abuse

Overuse measurements and their applications

Outcome evaluation and cost-effectiveness analysis

Honors and Awards

Phi Beta Kappa Honor Society, 2009-Present                     

Taiwan Merits Scholarships, 2005–2008                               

Rotary Foundation Academic-Year Ambassadorial Scholar, 2001–2002

  • Risk Adjustment
  • Drug Safety
  • Pharmacoepidemiology
  • Opioid abuse
  • Health services research

Select publications from the last two years.

  • HY Chang, W Tang, E Hatef, C Kitchen, JP Weiner, H Kharrazi. Differential impact of mitigation policies and socioeconomic status on COVID-19 prevalence and social distancing in the United States. BMC public health 21 (1), 1-10
  • HY Chang, E Hatef, X Ma, JP Weiner, H Kharrazi. Impact of area deprivation index on the performance of claims-based risk-adjustment models in predicting health care costs and utilization. Population Health Management 24 (3), 403-411
  • HY Chang, YY Chou, W Tang, GM Chang, CF Hsieh, S Singh, YC Tung. Association of antidiabetic therapies with lower extremity amputation, mortality and healthcare cost from a nationwide retrospective cohort study in Taiwan. Scientific reports 11 (1), 1-10
  • YC Tung, GH Li, HY Chang. External Validation of and Factors Associated with the Overuse Index: a Nationwide Population-Based Study from Taiwan. Journal of general internal medicine 36 (2), 438-446
  • HY Chang, L Ferris, M Eisenberg, N Krawczyk, KE Schneider, K Lemke, et al. The impact of various risk assessment time frames on the performance of opioid overdose forecasting models. Medical care 58 (11), 1013-1021