Nicholas J Seewald, PhD
Assistant Professor of Biostatistics and Epidemiology at the Hospital of the University of Pennsylvania
Department: Biostatistics and Epidemiology
Graduate Group Affiliations
Contact information
624 Blockley Hall
423 Guardian Drive
Philadelphia, PA 19104
423 Guardian Drive
Philadelphia, PA 19104
Education:
BS (Mathematics (with Life Science), cum laude)
University of Notre Dame, Notre Dame, IN, 2013.
MS (Biostatistics)
University of Michigan, Ann Arbor, MI, 2015.
MA (Statistics)
University of Michigan, Ann Arbor, MI, 2018.
PhD (Statistics)
University of Michigan, Ann Arbor, MI, 2021.
Permanent linkBS (Mathematics (with Life Science), cum laude)
University of Notre Dame, Notre Dame, IN, 2013.
MS (Biostatistics)
University of Michigan, Ann Arbor, MI, 2015.
MA (Statistics)
University of Michigan, Ann Arbor, MI, 2018.
PhD (Statistics)
University of Michigan, Ann Arbor, MI, 2021.
Selected Publications
Stone EM, Seewald NJ, Rosen JG: The impact of Medicaid expansion on HIV pre-exposure prophylaxis coverage. Health Affairs 44(10): 1266-1272, Oct 2025 Notes: DOI: 10.1377/hlthaff.2025.00211.McGinty EE, Wagle P, Luo CL, Seewald NJ, Stuart EA, Tormohlen K: The impact of medical cannabis laws on cannabis and opioid use disorder treatment and overdose-related healthcare utilization among adults with chronic non-cancer pain. Milbank Quarterly Sept 2025 Notes: DOI: 10.1111/1468-0009.70052.
Till JE, Seewald NJ, Yazdani Z, Wang Z, Ballinger D, Samberg H, Dandu S, Macia C, Yin M, Abdalla A, Prior T, Shah S, Patel T, McCoy E, Monsour M, Wills CA, Bochenek V, Serrano J, Snuderl M, Phillips RE, O’Rourke DM, Amankulor NM, Nabavizadeh A, Desai AS, Gollomp K, Binder ZA, Zhou W, Bagley SJ, Carpenter EL: Corticosteroid-dependent association between prognostic peripheral blood cell-free DNA levels and neutrophil-mediated NETosis in patients with glioblastoma. Clinical Cancer Research 31(7): 1292-1304, Apr 2025 Notes: DOI: 10.1158/1078-0432.CCR-24-3169.
Moin EE, Seewald NJ, Halpern SD: Use of life support and outcomes among patients admitted to U.S. intensive care units, 2014 – 2023. JAMA 333(20): 1793-1803, Apr 2025 Notes: DOI: jama.2025.2163.
Seewald NJ, McGinty EE, Stuart EA: Target trial emulation for evaluating health policy. Annals of Internal Medicine 177(11): 1530-1538, Oct 2024 Notes: DOI: 10.7326/M23-2440.
McGinty EE, Tormohlen KN, Seewald NJ, Bicket MC, McCourt AD, Rutkow L, White SA, Stuart EA: Effects of U.S. state medical cannabis laws on treatment of chronic noncancer pain. Annals of Internal Medicine 176(7): 904-912, July 2023 Notes: DOI: 10.7326/M23-0053
McGinty EE, Bicket MC, Seewald NJ, Stuart EA, Alexander GC, Barry CL, McCourt AD, Rutkow L: Effects of state opioid prescribing laws on use of opioid and other pain treatments among commercially insured U.S. adults. Annals of Internal Medicine 175(5): 617-627, May 2022 Notes: DOI: 10.7326/M21-4363.
Seewald NJ, Smith SN, Lee AJ, Klasnja P, Murphy SA: Practical considerations for data collection and management in mobile health micro-randomized trials. Statistics in Biosciences 11(2): 355-370, Jul 2019 Notes: DOI: 10.1007/s12561-018-09228-w.
Klasnja P, Smith S, Seewald NJ, Lee A, Hall K, Luers B, Hekler EB, Murphy SA: Efficacy of contextually tailored suggestions for physical activity: A micro-randomized optimization trial of HeartSteps. Annals of Behavioral Medicine 53(6): 573-582, May 2019 Notes: DOI: 10.1093/abm/kay067.
McGinty EE, Seewald NJ, Bandara S, Cerdá M, Daumit GL, Eisenberg MD, Griffin BA, Igusa T, Jackson JW, Kennedy-Hendricks A, Marsteller J, Miech EJ, Purtle J, Schmid I, Schuler MS, Yuan CT, Stuart EA: Scaling interventions to manage chronic disease: innovative methods at the intersection of health policy research and implementation science. Prevention Science 25(Suppl 1), 2022 Notes: doi: 10.1007/s11121-022-01427-8.