Keck-Schaeffer Initiative for Population Health Policy

KSI Cover Photo

Our Mission

The mission of the Keck-Schaeffer Initiative for Population Health is to combine empirical, multidisciplinary and policy-driven research with clinical insight to develop high value strategies to improve the health of vulnerable populations.


Our Founders
USC Roski Eye Institute
Department of Emergency Medicine
Schaeffer Center for Health Policy & Economics
Steering Committee

Carl Chudnofsky, MD
Chair, Department of Emergency Medicine
Dana Goldman, PhD
Director, Schaeffer Center for Health Policy & Economics

Seth Seabury, PhD
Director, Keck-Schaeffer Initiative for Population Health Policy

Seabury cropped

Michael Menchine, MD, MPH
Associate Director, Keck-Schaeffer Initiative for Population Health Policy

Menchine Headshot cropped

Sara Axeen, PhD
Associate Professor of Research in the Department of Emergency Medicine


Étienne Gaudette, PhD
Adjunct Research Professor
Department of Pharmaceutical and Health Economics in the School of Pharmacy


Hanke Heun-Johnson, PhD
Project Specialist

Hanke Headshot cropped

Khristina Ipapo, MPH
Research Programmer

Khristina Headshot cropped

Our History

The Keck-Schaeffer Initiative for Population Health Policy (KSI) is a collaboration between the Keck School of Medicine of USC and the USC Schaeffer Center for Health Policy & Economics. Housed in the USC Roski Eye Institute and created with support from the USC Department of Emergency Medicine and the Schaeffer Center, the KSI will foster multidisciplinary collaborations to generate new research and educational opportunities to study population health policy at the Keck School of Medicine.

Project Areas

The KSI is conducting cutting edge research designed to improve population health across several key areas. Currently, our ongoing work addresses the following topics:

In the News

Recent Publications




      1. National Academies of Sciences, Engineering, and Medicine. Health-care utilization as a proxy in disability determination. Washington, DC: The National Academies Press. doi:, 2018.
      2. Seabury SA, Gaudette É, Goldman DP, Markowitz AJ, Brooks J, McCrea MA, Okonkwo DO, Manley GT and the TRACK-TBI Investigators. Assessment of Follow-up Care After Emergency Department Presentation for Mild Traumatic Brain Injury and Concussion: Results From the TRACK-TBI Study. JAMA Network Open 1(1): e180210-e180210, 2018.
      3. Axeen S, Seabury SA, Menchine M. Emergency Department Contribution to the Prescription Opioid Epidemic. Annals of Emergency Medicine., 2018.
      4. Axeen S. Trends in Opioid Use and Prescribing in Medicare, 2006–2012. Health services research, 2018.
      5. Schriger, David L., et al. Emergency physician risk estimates and admission decisions for chest pain: a web-based scenario study. Annals of emergency medicine, 2018.
      6. Burner, Elizabeth RE, et al. Perceptions of Family Among Low-Income Patients With Diabetes in a Text-Based Mobile Health Intervention. Journal of diabetes science and technology 1932296818770702, 2018.
      7. Ghobadi, Ali, et al. “Reduction of Parenteral Opioid Use in Community Emergency Departments Following Implementation of Treatment Guidelines. Academic Emergency Medicine, 2018.
      8. Burner, Elizabeth, et al. Using Mobile Health to Improve Social Support for Low-Income Latino Patients with Diabetes: A Mixed-Methods Analysis of the Feasibility Trial of TExT-MED+ FANS. Diabetes technology & therapeutics 20.1: 39-48, 2018.




      1. Barnett ML, Olenksi AR, Jena AB. Opioid Prescribing by Emergency Physicians and Risk of Long-Term Use. The New England Journal of Medicine 376.19: 1896, 2017.
      2. Stanley K, et al. HIV prevention and treatment: the evolving role of the emergency department. Annals of emergency medicine 70.4: 562-572, 2017.
      3. Terp S, et al. Individual Physician Penalties Resulting From Violation of Emergency Medical Treatment and Labor Act: A Review of Office of the Inspector General Patient Dumping Settlements, 2002–2015. Academic Emergency Medicine 24.4: 442-446, 2017.
      4. Terp S, et al. Enforcement of the Emergency Medical Treatment and Labor Act, 2005 to 2014. Annals of emergency medicine 69.2: 155-162, 2017.
      5. McLaren CF, Reville RT, Seabury SA. How effective are employer return to work programs? International Review of Law and Economics. v52, pp. 58-73, 2017.
      6. Nuckols TK, Conlon C, Robbins M, Dworsky M, Lai J, Roth CP, Levitan B, Seabury SA, Seelam R, Benner D, Asch SM. Quality of Care and Patient‐reported Outcomes in Carpal Tunnel Syndrome: A Prospective Observational Study. Muscle & Nerve. DOI: 10.1002/mus.26041, 2017.
      7. Ly DP, Seabury SA, Jena AB. Characteristics of US Physician Marriages, 2000–2015: An Analysis of Data from a US Census Survey. Annals of Internal Medicine, pp.1-3. DOI: 10.7326/M17-1758, 2017.
      8. Thornton JS, Batt K, Wu Y, Tebeka MG, Seabury SA. The option value of innovative treatments for non-small cell lung cancer and renal cell carcinoma. The American Journal of Managed Care, 23(10), e340-e346, 2017.
      9. Yue JK, Winkler EA, Sharma S, Vassar MJ, Ratcliff JJ, Korley FK, Seabury SA, Ferguson AR, Lingsma HF, Meeuws S, Adeoye OM. Temporal profile of care following mild traumatic brain injury: predictors of hospital admission, follow-up referral and six-month outcome. Brain Injury; 31(13-14):1820-9, 2017.
      10. Ly DP, Seabury SA, Jena AB. Hours Worked Among US Dual Physician Couples With Children, 2000 to 2015. JAMA Intern Med. Epub August 21, 2017. doi:10.1001/jamainternmed.2017.3437
      11. Schaffer AC, Jena AB, Seabury SA, Singh H, Chalasani V, Kachalia A. Rates and Characteristics of Paid Malpractice Claims Among US Physicians by Specialty, 1992-2014. JAMA Internal Medicine. 177(5): 710-718. 2017.
      12. Seabury SA., Frasco MA, Eijndhoven E, Sison S, Zacker C. The impact of self-and physician-administered cancer treatment on work productivity and healthcare utilization. Research in Social and Administrative Pharmacy, 2017.
      13. Seabury SA, Bognar K, Xu Y, Huber C, Commerford SR, Tayama D. Regional disparities in the quality of stroke care. The American Journal of Emergency Medicine, 2017.
      14. Desai S, Gruber PF, Eiting E, Seabury SA, Mack WJ, Voyageur C, Vasquez V, Kim HT, Terp S. The Effect of Utilization Review on Emergency Department Operations. Annals of Emergency Medicine, 2017.
      15. Seabury SA, Terp S, Boden LI. Racial And Ethnic Differences In The Frequency Of Workplace Injuries And Prevalence Of Work-Related Disability. Health Affairs (Millwood); 36(2): 266-273. 2017.




      1. Arora S, Ford K, Terp S, Abramson T, Ruiz R, Camilon M, Coyne CJ, Lam CN, Menchine M, Burner E. Describing the evolution of mobile technology usage for Latino patients and comparing findings to national Health estimates. J Am Med Inform Assoc. 2016 Sep;23(5):979-83.
      2. Berona K, Abdi A, Menchine M, Mailhot T, Kang T, Seif D, Chilstrom M. Success of Ultrasound-Guided versus Landmark-Guided Arthrocentesis of Hip, Ankle, and Wrist in a Cadaver Model. Am J Emerg Med 2016 Oct 24 (16)30752-5.
      3. Conlon C, Asch S, Hanson M, Avins A, Levitan B, Roth C, Robbins M, Dworsky M, Seabury S, Nuckols T. Assessing the Value of High-Quality Care for Work-Associated Carpal Tunnel Syndrome in a Large Integrated Health Care System: Study Design. Perm J. 2016 Fall;20(4):87-95.
      4. Ford K, Menchine M, Burner E, Arora S, Inaba K, Demetriades D, Yersin B. Leadership and Teamwork in Trauma and Resuscitation. West J Emerg Med. 2016 Sep;17(5):549-56.
      5. Jacobson KR, Arora S, Walsh KB, Lora M, Merjavy S, Livermore S, Menchine M. High Feasibility of Empiric HIV Treatment for Patients With Suspected Acute HIV in an Emergency Department. J Acquir Immune Defic Syndr. 2016 Jul 1;72(3):242-5.
      6. Gaudette, E., Pauley, G.C., and Zissimopoulos, J.M. Long-term Individual and Population Consequences of Early-life Access to Health Insurance. University of Michigan Retirement Research Center (MRRC) Working Paper WP 2016-355. Available at SSRN:
      7. Agus, D., Gaudette, E., Messali, A., and Goldman, D.P. The Long-Term Benefits of Increased Aspirin Use by At-Risk Americans Aged 50 and older. PLoS ONE, 11(11): e0166103, 2016.
      8. Goldman, D.P., Gaudette, E., Cheng, W.-H. Competing Risks: The Economics of Investing in Sickness rather than Health. American Journal of Preventive Medicine, 50(5, Supplement 1): p. S45-S50, 2016.
      9. Lam CN, Arora S, Menchine M. Increased 30-Day Emergency Department Revisits Among Homeless Patients with Mental Health Conditions. West J Emerg Med. 2016 Sep;17(5):607-12.
      10. Levine M, Flores J, Seabury SA, Sanko S, Eckstein M. Impact of the Use of Regional Poison Control Centers in an Urban Ems Dispatch System. J Med Toxicol. Epub 2016 Oct 7.
      11. Ly DP, Seabury SA, Jena AB. Differences in Incomes of Physicians in the United States by Race and Sex: Observational Study. Bmj. 2016;353:i2923.
      12. MacEwan JP, Kamat SA, Duffy RA, Seabury S, Chou JW, Legacy SN, Hartry A, Eramo A, Karson C. Hospital Readmission Rates among Patients with Schizophrenia Treated with Long-Acting Injectables or Oral Antipsychotics. Psychiatr Serv. 2016 Jul 15:appips201500455.
      13. Menchine M, Zhou M, Lotfipour S, Chakravarthy B. Moving Beyond Screening: How Emergency Departments Can Help Extinguish the HIV/AIDS Epidemic. West J Emerg Med. 2016 Mar;17(2):135-8.
      14. Schwartz AL, Pesa J, Doshi D, Fastenau J, Seabury SA, Roberts ET, Grabowski DC. Medicaid Managed Care Penetration and Drug Utilization for Patients with Serious Mental Illness. Am J Manag Care. 2016 May;22(5):346-53.
      15. Seabury SA. Letter. J Manag Care Spec Pharm. 2016 Nov;22(11):1222.
      16. Shafrin J, Ganguli A, Gonzalez YS, Shim JJ, Seabury SA. Geographic Variation in the Quality and Cost of Care for Patients with Rheumatoid Arthritis. J Manag Care Spec Pharm. 2016 Dec;22(12):1472-81.
      17. Terp S, Seabury SA, Arora S, Eads A, Lam CN, Menchine M. Enforcement of the Emergency Medical Treatment and Labor Act, 2005 to 2014. Ann Emerg Med. Epub 2016 Aug 1.
      18. Thornton Snider J, Seabury S, Lopez J, McKenzie S, Goldman DP. Impact of Type 2 Diabetes Medication Cost Sharing on Patient Outcomes and Health Plan Costs. Am J Manag Care. 2016 Jun;22(6):433-40.
      19. Undurraga Perl VJ, Leroux B, Cook MR, Watson J, Fair K, Martin DT, Kerby JD, Williams C, Inaba K, Wade CE, Cotton BA, Del Junco DJ, Fox EE, Scalea TM, Tilley BC, Holcomb JB, Schreiber MA; PROPPR Study Group. Damage-control resuscitation and emergency laparotomy: Findings from the PROPPR study. J Trauma Acute Care Surg. 2016 Apr;80(4):568-74; discussion 574-5.
      20. Wagner JG, Schneberk T, Zobrist M, Hern HG, Jordan J, Boysen-Osborn M, Menchine M. What Predicts Performance? A Multicenter Study Examining the Association Between Resident Performance, Rank List Position, and United States Medical Licensing Examination Step 1 Scores. J Emerg Med. 2016 Dec 9. pii: S0736-4679(16)30996-9.




    1. Gaudette E, Tysinger B, Cassil A, Goldman DP. Health and Health Care of Medicare Beneficiaries in 2030. Forum for Health Policy and Economics, 18(2), p. 75-96, 2015.
    2. Gaudette E, Goldman DP, Messali A, Sood N. Do Statins Reduce the Health and Health Care Costs of Obesity? PharmacoEconomics, 33(7), p. 723-734, 2015.
    3. Romley J, Axeen S, Lakdawalla D, Chernew M, Bhattacharya J, Goldman D. The Relationship between Commercial Health Care Prices and Medicare Spending,” Health Services Research 50 (3), June 2015: 883-896.
    4. Jena AB, Schoemaker L, Bhattacharya J, Seabury SA. Physician Spending and Subsequent Risk of Malpractice Claims: Observational Study. Bmj. 2015;351:h5516.
    5. Jena AB, Schoemaker L, Bhattacharya J, Seabury SA. Authors’ Reply to Barbieri and Kovarik, Mariani, and Waxman and Kanzaria. Bmj. 2015;351:h6774.