Research Interests

Health economics and policy evaluation: healthcare provider incentives and behaviors, addiction policy,  public insurance programs, incentivized medical-fraud enforcement, and corruption.


Selective Peer Reviewed Publications

Nguyen, TD, Ziedan, E, Simon, K, Miles, J, Crystal, S, Samples, H, Gupta, S. Racial and Ethnic Disparities in Buprenorphine and Extended-Release Naltrexone Filled Prescriptions During the COVID-19 Pandemic. JAMA Netw Open. 2022 Jun 1;5(6):e2214765. doi: 10.1001/jamanetworkopen.2022.14765. PMID: 35648400.

Nguyen, TD, Andraka-Christou B, Bradford WD, Simon K. Opting into the Public List of DATA-Waivered Practitioners: Variations by Specialty, Treatment Capacity, and Practitioner Characteristics. J Addict Med. 2021 Oct 18. doi: 10.1097/ADM.0000000000000911. Epub ahead of print. PMID: 34669615.

Nguyen TD, Muench U, Andraka-Christou B, Simon K, Bradford WD, Spetz J. The Association Between Scope of Practice Regulations and Nurse Practitioner Prescribing of Buprenorphine After the 2016 Opioid Bill. Med Care Res Rev. 2022 Apr;79(2):290-298. doi: 10.1177/10775587211004311. Epub 2021 Apr 1. PMID: 33792414; PMCID: PMC8594929.

Nguyen TD, Gupta S, Ziedan E, Simon KI, Alexander GC, Saloner B, Stein BD. Assessment of Filled Buprenorphine Prescriptions for Opioid Use Disorder During the Coronavirus Disease 2019 Pandemic. JAMA Intern Med. 2021 Apr 1;181(4):562-565. doi: 10.1001/jamainternmed.2020.7497. PMID: 33346795; PMCID: PMC7754073.

Nguyen TD, Bradford WD, Simon KI. Pharmaceutical payments to physicians may increase prescribing for opioids. Addiction. 2019 Jun;114(6):1051-1059. doi: 10.1111/add.14509. Epub 2019 Jan 22. PubMed PMID: 30667135.

Nguyen TD, Andraka-Christou B, Simon K, Bradford WD. Comparison of Rural vs Urban Direct-to-Physician Commercial Promotion of Medications for Treating Opioid Use Disorder. JAMA Netw Open. 2019 Dec 2;2(12):e1916520. doi: 0.1001/jamanetworkopen.2019.16520. PubMed PMID: 31790568.

Nguyen TD, Andraka-Christou B, Simon K, Bradford WD. Provider-directed marketing may increase prescribing of medications for opioid use disorder. J Subst Abuse Treat. 2019 Sep;104:104-115. doi: 10.1016/j.jsat.2019.06.014. Epub 2019 Jul 1. PubMed PMID: 31370974.

Nguyen TD. Does firm growth increase corruption? Evidence from an instrumental variable approach. Small Bus Econ. 2020 June;55:237–256. doi: 10.1007/s11187-019-00160-x

Gupta S, Nguyen TD, Rojas F, Raman S, Lee B, Bento A, Simon K, Wing C. Tracking Public and Private Response to the COVID-19 Epidemic: Evidence from State and Local Government Actions. American Journal of Health Economics. 2021 October 6. DOI: 10.1086/716197. A previous version appeared as NBER Working paper #27027.

Cantor, J, Whaley, C, Simon, KI & Nguyen, TD. US Health Care Workforce Changes During the First and Second Years of the COVID-19 Pandemic. JAMA Health Forum. Vol. 3. No. 2. American Medical Association, 2022.

Bento AI, Nguyen TD, Wing C, Lozano-Rojas F, Ahn YY, Simon K. Evidence from internet search data shows information-seeking responses to news of local COVID-19 cases. Proc Natl Acad Sci U S A. 2020 May 26;117(21):11220-11222. doi: 10.1073/pnas.2005335117. Epub 2020 May 4. PubMed PMID: 32366658.


In the News

“Data Resources on Medical Providers”, American Resources on Medical Providers, 2020 (Link)

“IU study looks at the effect of Medicaid expansion on hiring attempts in substance use treatment workforce”, IU Research Impact, January 2020 (Link)

“Opioid sales reps visited Columbus doctors frequently”, The Republic, September 2019 (Link)

“Payments to physicians may increase opioid prescribing”, Society for the Study of Addiction, January 2019 (Link)

“Prescription Limits May Increase Opioid Exposure”, The Washington Free Beacon, June 2019 (Link)

“The (Human) Cost of Greed”, The Medicine Maker magazine, 11/27/2019 (Link)


Papers under Review

Nguyen, T. D., Bradford, W. D., & Simon, K. I. How do Provider Restrictions on Prescription Opioids Affect Pharmaceutical Promotions? Lessons from the Mandatory Access Prescription Drug Monitoring Programs. No. w26356. National Bureau of Economic Research, 2019. (Link)

Gupta, S., Montenovo, L., Nguyen T.D., Rojas, F., Schmutte, I., Simon, K., Weinberg, B., & Wing, C. Effects of social distancing policy on labor market outcomes. No. w27280. National Bureau of Economic Research, 2020. (Link)

Gupta, S., Nguyen, T. D., Freeman, P., Simon K. Competitive Effects of Federal and State Opioid Restrictions: Evidence from the Controlled Substance Laws. No. 27520. National Bureau of Economic Research, 2020. (Link)

Perez, V., Nguyen, T. D., Understanding Heterogeneity in State Demand for Decentralized Fraud Enforcement: Evidence from US Medicaid Program.


Working Papers

Nguyen, T. D. & Lee, B. Today’s Lesson is Tomorrow’s Practice: The Early Exposure to State Restrictive Marketing Policies in Medical School Discourages Physicians from Receiving Pharmaceutical Payments. *

Nguyen, T.D., Simon, K., Bradford, D., & Conti, R. Does Expansion of Public Health Insurance Affect Prescription Drug Marketing?*