Cameron Kaplan, PhD

Director, Gehr Family Center for Health Systems Science and InnovationAssociate Professor of Medicine (with Tenure), Keck School of Medicine of USC

Health economist studying insurance design, Medicare policy, and health outcomes.

Cameron Kaplan, PhD - Health Economist at USC

Cameron Kaplan

Gehr Family Center for Health Systems Science
USC Schaeffer Center for Health Policy
Keck School of Medicine of USC

51
Publications
$4.8M
Funding as PI
15
Years Since PhD

About

Health economist dedicated to improving healthcare through rigorous research

Dr. Cameron Kaplan is Director of the Gehr Family Center for Health Systems Science and an Associate Professor of Medicine (with Tenure) at the USC Keck School of Medicine, with research and teaching that address insurance design, Medicare policy, and health policy in California, including Medi-Cal and safety-net systems. He is also a Senior Scholar at the USC Schaeffer Center for Health Policy & Economics.

His research program focuses on understanding how health policy and insurance benefit design affect healthcare utilization, health outcomes, and disparities. Dr. Kaplan employs sophisticated econometric methods to analyze large healthcare datasets, evaluating the real-world impacts of policy changes on vulnerable populations.

Dr. Kaplan's current research portfolio includes NIH-funded studies examining COVID-19's impact on disparities in preventive care access and the health impacts of opioids on hospitalized infants. His work has been published in leading journals including Health Affairs, JAMA Network Open, Health Economics, and Annals of Internal Medicine.

Prior to joining USC in 2018, Dr. Kaplan was on faculty at the University of Tennessee Health Science Center. He earned his BA in Economics from Brandeis University (2005), his PhD in Economics from UC Santa Barbara (2011), and completed postdoctoral training at the University of Pittsburgh.

Credentials & Expertise

  • 🎓 PhD Economics, UC Santa Barbara
  • 🎓 Postdoctoral training, Univ. of Pittsburgh
  • 🏛 Associate Professor of Medicine (Tenured)
  • 🔬 NIH U01 Principal Investigator
  • 🏫 Director, Gehr Family Center
  • 📊 Senior Scholar, USC Schaeffer Center
  • 📋 Ad hoc reviewer, NIH study sections
📄 Download Full CV (PDF)

Research Areas

How the design of coverage determines who gets care

📋

Insurance Benefit Design & Cost Sharing

How deductibles, coinsurance, coverage phases, and plan structure change what people actually use, including work on high-deductible plans, health savings accounts, and the financial burden carried by adults with chronic conditions.

🏥

Medicare Part D & Prescription Drug Policy

Long-running work on how Part D benefit design affects medication use, adherence, and discontinuation, including the closure of the coverage gap, the January reset in cost sharing, and which drugs and patients respond most to price changes.

🛡️

Medigap & Supplemental Coverage Regulation

How state insurance regulations govern access to Medigap supplemental coverage outside the initial enrollment window, and what that means for beneficiaries facing high cost sharing without an annual limit.

⚖️

Medicaid, Medi-Cal & Coverage Transitions

Enrollment churn, transitions between coverage types, and how those transitions change out-of-pocket costs and care use, with a focus on California and on alternative payment models in Medicaid.

🏘️

Access in Safety-Net Health Systems

Primary, preventive, and cancer screening care in county health systems and federally qualified health centers, including how access was disrupted, how it recovered, and what determines whether coverage translates into care.

🚭

Tobacco Policy & Insurance Markets

ACA marketplace tobacco premium surcharges and how subsidy design amplifies them, state limits on surcharges and their enrollment effects, and the reach of local flavor and smoke-free policies.

Selected Publications

Peer-reviewed research in health policy, health economics, and health services research

Cumulative Opioid Exposures in the First Year of Life and Cognitive Neurodevelopment in High-Risk Infants
Keane OA, Ourshalimian S, Lakshmanan A, Ross P, Kim E, Lee HC, Hintz SR, Nguyen N, Ing M, Kaplan C, Mirzaian CB, Vanderbilt D, Anand KS, Kelley-Quon LI
Hospital Pediatrics
2026
Opioids Pediatrics Neurodevelopment
The Medication Affordability, Accessibility, and Availability in Care Transitions (Med AAAction) Study: Design and methods for a pharmacy-led trial implemented in low-income populations
Mallisetty Y, Shah R, Kerby T, Mamudu HM, Bailey JE, Dowling-McClay K, Kovesdy CP, Kaplan C, Chamberlin S, Hawkins A, Tolley EA, Graff JC, Grant CC, Butterworth SW, Surbhi S
Contemporary Clinical Trials
2026
Medication Adherence Care Transitions Safety Net
National longitudinal risk of tobacco use among youth and young adults in US local jurisdictions with and without flavor and comprehensive smoke-free policies, 2014–2019
Rose SW, Thaxton Wiggins A, Patel M, Liu M, van de Venne J, Kucherlapaty P, Schillo B, Ickes M, Mattingly D, Kaplan C, Rayens MK
JNCI Monographs
2025
Tobacco Policy Flavor Policy Youth
The Impact of Prescription Drug Coverage on Disparities in Adherence and Medication Use: A Systematic Review
Kaplan CM, Waters TM, Clear ER, Graves EE, Henderson S
Medical Care Research and Review
2024
Drug Coverage Medication Adherence Disparities
Institutional and regional variation in opioid prescribing for hospitalized infants in the US
Keane OA, Ourshalimian S, Lakshmanan A, Lee HC, Hintz SR, Nguyen N, Ing MC, Gong CL, Kaplan CM, Kelley-Quon LI
JAMA Network Open
2024
Opioids Pediatrics Practice Variation
Disparities in access to COVID-19 testing in Los Angeles County
Khalifeh Z, Saluja S, Lam CN, Kaplan CM
Preventive Medicine Reports
2024
COVID-19 Access to Care Los Angeles
Effects of Medicare Part D coverage gap closure on utilization of branded and generic drugs
Liu J, Zhang Y, Kaplan CM
Health Economics
2023
Medicare Part D Coverage Gap Generic Drugs
Alleviating Financial Hardships Associated with High-Deductible Health Plans for Adults with Chronic Conditions Through Health Savings Accounts
Park KE, Saluja S, Kaplan CM
Journal of General Internal Medicine
2023
High-Deductible Plans HSAs Chronic Disease
Differential Effects by Mental Health Status of Filling the Medicare Part D Coverage Gap
Liu J, Zhang Y, Kaplan CM
Medical Care
2022
Medicare Part D Mental Health
Marketplace Premiums Rise Faster For Tobacco Users Because Of Subsidy Design
Manz KC, Waters TM, Kaplan CM
Health Affairs
2020
Tobacco Surcharges Subsidy Design ACA
State Policies Limiting Premium Surcharges for Tobacco and their Impact on Health Insurance Enrollment
Kaplan CM, Kaplan EK
Health Services Research
2020
Tobacco Policy State Regulation Enrollment
How Have 30-Day Readmission Penalties Affected Racial/Ethnic Disparities in Readmissions?
Kaplan CM, Thompson MP, Waters TM
Journal of General Internal Medicine
2019
Readmission Penalties Value-Based Payment Disparities
Anticipatory Behavior in Response to Medicare Part D's Coverage Gap
Kaplan CM, Zhang Y
Health Economics
2017
Medicare Part D Coverage Gap Anticipatory Behavior
Most Exchange Plans Charge Lower Tobacco Surcharges Than Allowed, But Many Tobacco Users Lack Affordable Coverage
Kaplan CM, Graetz I, Waters TM
Health Affairs
2014
Tobacco Surcharges Affordability ACA
The U.S. Health Insurance Marketplace: Are Premiums Truly Affordable?
Graetz I, Kaplan CM, Kaplan EK, Bailey JE, Waters TM
Annals of Internal Medicine
2014
ACA Marketplace Premiums Affordability
The January Effect: Medication Discontinuation among Medicare Part D Beneficiaries
Kaplan CM, Zhang Y
Health Economics
2014
Medicare Part D Medication Adherence Cost Sharing
View All 51 Publications on Google Scholar →

Writing

Explaining the design details that decide who gets care

Insurance Design

How subsidy design amplifies ACA tobacco surcharges

Insurers may charge tobacco users up to 50 percent more, and most charge considerably less than that. Tobacco users nevertheless face worse affordability, because marketplace subsidies are calculated before the surcharge is applied.

Medicare

What the Medicare Part D benefit structure does to medication use

Part D changes a beneficiary's out-of-pocket price discontinuously through the year and resets each January. Beneficiaries anticipate those changes, though less completely than standard theory would predict.

Medicare

State regulation of Medigap and access to supplemental coverage

Traditional Medicare places no annual limit on out-of-pocket costs. Access to a Medigap policy once the initial enrollment window has closed is governed almost entirely by state law.

All writing →

Gehr Family Center

Health systems research on the quality, value, and equity of care

The Gehr Family Center for Health Systems Science and Innovation builds the evidence base for equitable access to high-quality health care. We apply health economics, health policy, and access research to real delivery systems, with established strength in the safety net and a lens that applies just as directly to improving care for all patients.

Applied Health Systems Research

Economics, policy, and access methods applied to questions delivery systems actually face, including coverage and cost sharing, care access and continuity, payment model design, and the measurement of disparities in real patient populations.

Safety-Net Partnerships

Sustained research relationships with Los Angeles County health services, federally qualified health centers, and Medicaid managed care organizations, grounded in the systems that care for dual-eligible, uninsured, and underserved populations.

Training the Next Generation

An annual summer research program pairing students with faculty mentors, built around six weeks of intensive training in health systems research methods, followed by mentored work on active studies.

Visit Gehr Center Website →

🎉 You Found a Secret!

Fun fact: The field of health economics emerged in the 1960s, with Kenneth Arrow's seminal 1963 paper "Uncertainty and the Welfare Economics of Medical Care" laying much of the groundwork for understanding healthcare markets.

Thanks for exploring! — CK

Frequently Asked Questions

Common questions about my research, methods, and availability

What does Cameron Kaplan study?

I am a health economist, and my research asks how the design of health insurance affects whether people can actually get and afford care. That work spans Medicare prescription drug benefit design and the Part D coverage gap, state regulation of Medigap supplemental coverage, Medicaid and Medi-Cal enrollment and cost sharing, ACA marketplace premium subsidies and tobacco surcharges, and access to primary and preventive care in safety-net health systems.

A recurring theme across all of it: coverage on paper does not guarantee access in practice, and the details of benefit design usually determine who gets left out.

What data and methods do you use?

Mostly large administrative and claims datasets, including Medicare claims, all-payer claims databases, California Health Care Payments Data, electronic health record data from safety-net systems, and national survey data such as the Current Population Survey.

Methodologically I work in applied microeconometrics and quasi-experimental policy evaluation: difference-in-differences designs, instrumental variables, and cost-effectiveness analysis. Most of my identification strategies exploit either variation in state policy or discrete changes in federal benefit rules.

What is the Gehr Family Center for Health Systems Science and Innovation?

It is a research center at the Keck School of Medicine of USC that I have directed since 2023. The center builds the evidence base for equitable access to high-quality health care, applying health economics, policy, and access research to real delivery systems. Its established strength is in safety-net settings, including Los Angeles County health services, federally qualified health centers, and Medicaid managed care.

The center also runs an annual summer research program that places students with faculty mentors alongside six weeks of intensive research training.

What are you working on now?

My current NIH-funded work is an NIMHD U01, for which I am principal investigator, examining how COVID-19 mitigation efforts affected access to routine preventive care and chronic disease management in safety-net settings.

I am also involved in ongoing collaborative work on opioid exposure and outcomes among hospitalized infants, and on medication adherence and care transitions in low-income populations. Beyond currently funded projects, my continuing research interests include the regulation of Medicare supplemental coverage and the effects of coverage transitions in Medicaid.

Are you available for collaboration, expert commentary, or consulting?

Yes. I welcome research collaboration, and I am glad to hear from journalists and policy organizations working on health insurance design, Medicare and Medicaid policy, prescription drug coverage, and access to care in safety-net systems.

The best way to reach me is [email protected].

Where can I find your full publication list and CV?

A complete list of my 51 peer-reviewed publications is on Google Scholar and in my ORCID record (0000-0001-6430-6816). My current CV is available here as a PDF.

Contact

Open to research collaboration, and to media and policy inquiries

📧 Email

[email protected]

🏢 Office

Gehr Family Center
2250 Alcazar St, CSC 261
Los Angeles, CA 90089

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