Research

WORKING PAPERS:

• Aging Out of Parental Insurance: Shifts in Insurance Status, Hospital Utilization, and the Role of Medicaid Expansion. Coauthored with Yaa Akosa Antwi. (Revise and resubmit.)

• Measuring Hospital Utilization During the COVID-19 Pandemic Using NHSN and HCUP. Coauthored with Alison Binder, Andrea Cool, Margaret Dudeck, and Pamela Owens. (Revise and resubmit.)

• Financial Strain Associated with Out-of-Network and Surprise Bills. Coauthored with Adam Biener. (Under review.)

• Decoupling of Hospital Operations and Real Estate Ownership from 2010–2025. Coauthored with Jonathan Bakdash and Lan Liang. (Under review.)

PUBLICATIONS:

Physician Workforce and Practice

• Non–US-Born Physicians in the US Internal Medicine Workforce, (2026) JAMA. Coauthored with Bradley Gray, Jonathan Vandergrift, Alicia Fernandez, Salahuddin Kazi, and Rebecca Lipner.

• Mandatory Prescription Drug Monitoring Programs and Overlapping Prescriptions of Opioids and Benzodiazepines: Evidence from Kentucky, (2023) Drug and Alcohol Dependence. Coauthored with Thuy Nguyen and Thomas Buchmueller.

• Provider Compliance With Kentucky’s Prescription Drug Monitoring Program’s Mandate To Query Patient Opioid History, (2021) Health Affairs. Coauthored with Colleen Carey and Thomas Buchmueller.

• How Well Do Doctors Know Their Patients? Evidence from a Mandatory Access Prescription Drug Monitoring Program, (2020) Health Economics. Coauthored with Thomas Buchmueller and Colleen Carey.  

Effects of Insurance Coverage on Healthcare Use

• Medicaid Continuous Coverage Requirement and Postpartum Hospitalization, (2026) JAMA Health Forum. Coauthored with Maria Steenland and Erica Eliason. 

• Heterogeneous Effects of the Affordable Care Act on Emergency Department Visits and Payer Composition among Older Adults by Race and Ethnicity, (2024) American Journal of Health Economics. Coauthored with Asako Moriya and Yaa Akosa Antwi.  

• Interruptions in Insurance Coverage and Prescription Drug Utilization: Evidence from Kentucky, (2024) Medical Care Research and Review.

• The Effects of the Medicaid Expansion on Hospital Utilization, Employment, and Capital, (2023) Medical Care Research and Review. Coauthored with Brady Post.

Health Care Markets

• Catholic Hospital Affiliation and Postpartum Contraceptive Care and Subsequent Deliveries, (2024) JAMA Internal Medicine. Coauthored with Jessica Monnet.

• Patient Travel Patterns and Concordance with Geographic Market Boundaries, (2024) Annals of Internal Medicine. Coauthored with Sandra Decker and Rebecca Gourevitch.

• The Consequences of Firm Scope and Scale on Patient Access to Care, (2024) Health Services Research. Coauthored with Thomas Koch, Brett Wendling, and Samuel Zuvekas.

Other Topics in Healthcare Use and Spending

• Trends in US Health Care Spending by Income, 2005–23, (2026) Health Affairs. Coauthored with Betsy Cliff.

• Children's Mental Health: Living with Parents who had Adverse Childhood Experiences, (2024) Health Affairs. Coauthored with Sandra Decker, Xue Wu, and Samuel Zuvekas.

• COVID-19 Admission Rates and Changes in Care Quality in US Hospitals, (2024) JAMA Network Open. Coauthored with Pamela Owens, Sandra Decker, et al.

• COVID-19 Admission Rates and Changes in US Hospital Inpatient and Intensive Care Unit Occupancy, (2023) JAMA Health Forum. Coauthored with Sandra Decker, Pamela Owens, and Thomas Selden.