Jonathan Zhang

ORCID: 0000-0003-0185-8992
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About
Contact & Profiles
Research Areas
  • Healthcare Policy and Management
  • Primary Care and Health Outcomes
  • Opioid Use Disorder Treatment
  • Global Health Care Issues
  • Child and Adolescent Health
  • Migration and Labor Dynamics
  • Patient Satisfaction in Healthcare
  • Adolescent and Pediatric Healthcare
  • Healthcare cost, quality, practices
  • Migration, Ethnicity, and Economy
  • CAR-T cell therapy research
  • Retirement, Disability, and Employment
  • Health Systems, Economic Evaluations, Quality of Life
  • Nursing Roles and Practices
  • COVID-19 and healthcare impacts
  • Telemedicine and Telehealth Implementation
  • Diabetes Management and Education
  • Chronic Disease Management Strategies
  • COVID-19 and Mental Health
  • Employment and Welfare Studies
  • Food Security and Health in Diverse Populations
  • Pain Management and Opioid Use
  • Clinical practice guidelines implementation
  • Healthcare professionals’ stress and burnout
  • Decision-Making and Behavioral Economics

National Bureau of Economic Research
2021-2025

Princeton University
2021-2024

McMaster University
2021-2024

IIT@MIT
2024

University of Chicago
2024

American Economic Association
2024

University of Virginia
2024

University of Illinois Chicago
2024

Oak Ridge National Laboratory
2023

United States Department of Veterans Affairs
2021-2023

<h3>Importance</h3> The COVID-19 pandemic disrupted medical care, impacting prescribing of opioid analgesics and buprenorphine for use disorder. Understanding these patterns can help address barriers to care. <h3>Objective</h3> To evaluate how disorder changed throughout the among both new existing patients. <h3>Design, Setting, Participants</h3> In this cross-sectional study, from March 18 September 1, 2020, was projected using a national database retail prescriptions January 2018, 3, 2020....

10.1001/jamanetworkopen.2021.6147 article EN cc-by-nc-nd JAMA Network Open 2021-04-15

This cross-sectional study uses data from the Ohio Department of Health to evaluate trends in drug overdose mortality that state by type and user age during first 7 months COVID-19 epidemic.

10.1001/jamanetworkopen.2021.7112 article EN cc-by-nc-nd JAMA Network Open 2021-04-14

Meeting abstracts Glioblastoma (GBM) remains incurable with current standard-of-care therapies. Adoptive T cell transfer holds the promise to improve outcomes for GBM patients. We report on results of Phase I clinical study, [NCT01109095][1], administering autologous CMV.pp65 cells

10.1186/2051-1426-3-s2-o11 article EN cc-by Journal for ImmunoTherapy of Cancer 2015-11-04

The COVID-19 pandemic significantly altered individual behaviors, including the consumption of health care. I study utilization and mortality in largest integrated health-care system United States, Veterans Health Administration, find that between middle March beginning May 2020, emergency department inpatient hospital visits declined by 37 percent 46 percent, remained 10 17 below expected levels end October. Declines were more pronounced for nonurgent non-life-threatening conditions,...

10.1086/715158 article EN American Journal of Health Economics 2021-05-04

Abstract Healthcare providers often deviate from guidelines, leading to worse outcomes. I study the impact of academic detailing (also known as educational outreach) primary care teams on safer pain management, risk evaluation, harm reduction, and opioid use disorder treatment. Using data over 5 million patients, find improves provider behavior: it increases naloxone prescribing, prescription drug monitoring queries, reduces prescriptions for three years. Patients have fewer emergency visits...

10.1162/rest_a_01558 article EN The Review of Economics and Statistics 2025-01-28

We use practice variation across physicians to uncover the role of medical care in causing opioid dependence. Using health records 2 million US veterans with emergency department visits, we find that quasi-random assignment a top (versus bottom) decile prescribing provider significantly increases subsequent and misuse rates. Instrumental variable results show prescription receipt leads 20 percent increase probability long-term sizable development disorder overdose mortality. suggestive...

10.1257/app.20210048 article EN American Economic Journal Applied Economics 2022-09-28

We study impacts of a cash transfer program with no means-test and work restrictions: the US Department Veteran Affairs (VA) Disability Compensation program. Our empirical strategy leverages quasi-random assignment veterans claiming mental disorder disability to examiners who vary in their assessing tendencies. find that an additional $1,000 per year transfers decreases food insecurity homelessness by 4.1% 1.3% over five years, while number collections on VA debts declines 6.4%. Despite...

10.2139/ssrn.4068047 article EN SSRN Electronic Journal 2022-01-01

We examine differences in the prescribing of psychiatric medications to lower-income and higher-income children Canadian province Ontario using rich administrative data that includes diagnosis codes physician identifiers. Our most striking finding is conditional on medical history, low-income are more likely be prescribed antipsychotics benzodiazepines than who see same doctors. These drugs with potentially dangerous side effects ideally should only under narrowly proscribed circumstances....

10.1016/j.jhealeco.2023.102841 article EN cc-by-nc-nd Journal of Health Economics 2023-12-12

Understanding the patterns of genetic variation and constraint for continuous reaction norms, growth trajectories, other function-valued traits is challenging. We describe illustrate a recent analytical method, simple basis analysis (SBA), that uses variance-covariance (G) matrix to identify "simple" directions constraints have straightforward biological interpretations. discuss parallels between eigenvectors (principal components) identified by principal components (PCA) (SB) vectors SBA....

10.1086/681083 article EN The American Naturalist 2015-04-06

To quantify overall trends in patients treated for mental health disorders and adverse events, including via tele-mental (TMH) psychopharmacology during pandemic-related care transformation. Longitudinal observational study veterans receiving treatment at a Veterans Health Administration (VHA) facility from January 1, 2017 to June 16, 2020. Observed expected patient on-going new of depression, posttraumatic stress, substance use disorder, severe illness diagnoses, overdose, suicide attempts,...

10.1037/ser0000530 article EN other-oa Psychological Services 2021-04-08

We use administrative data from Medicare to document the massive consolidation of primary care physicians over last decade and its impact on patient healthcare utilization. first that organizations have consolidated all United States between 2008 2014. then show regions experienced greater are associated with decline in overall spending. Finally, our exercise, we exploit transitions patients across driven by changes organizational affiliations their study size Our preferred specification...

10.1002/hec.4257 article EN Health Economics 2021-03-25

Abstract We use data from the Veterans Administration to examine efficacy of primary care providers (PCPs). Leveraging quasi-random assignment veterans PCPs, we measure effectiveness using ambulatory sensitive conditions (ACSC) and hospitalizations/emergency department (ED) visits for mental health or circulatory conditions. PCPs’ variation along these dimensions predicts future outcomes. For example, a 1 standard deviation improvement in reduces patient risk death by 3.8% lowers costs 4.4%...

10.1162/rest_a_01290 article EN The Review of Economics and Statistics 2023-02-07

3008 Background: Glioblastoma (GBM) remains virtually incurable. T-cell therapy holds the promise to improve outcomes for GBM patients since it does not rely on cytotoxic mechanisms of conventional therapies. We have shown in preclinical studies that HER2 and CMV are potential targets GBM. Methods: report initial results phase I clinical study, NCT01109095, administering autologous CMV.pp65 T cells grafted with a second generation chimeric antigen receptor (CAR; CD28.zeta signaling domain)...

10.1200/jco.2015.33.15_suppl.3008 article EN Journal of Clinical Oncology 2015-05-20
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