Rie Sakai-Bizmark, MD, MPH, PhD

Rie Sakai-Bizmark, MD, MPH, PhD

Investigator, The Lundquist Institute
Associate Professor of Pediatrics, David Geffen School of Medicine at UCLA

Dr. Sakai-Bizmark utilizes large administrative databases to focus on health services research.

Research Description

First, she is applying existing frameworks and methodologies for implementation science to the translation of research into real world healthcare settings, which currently include health screenings for newborn infants.

Second, she is evaluating the effectiveness and efficacy of a range of health interventions, screenings, and regionalization policies to guide healthcare policies. Specializations have included pediatric cardiology, asthma, and diabetes mellitus.

Third, she is conducting research on improving management of physical and mental disorders in homeless environments, especially in the area of maternal, infant, and child health.


  • MD, 2000, Juntendo University School of Medicine, Tokyo Japan
  • PhD, 2008, Juntendo University School of Medicine, Tokyo Japan
  • MPH, 2010, Harvard T.H. Chan School of Public Health, Boston

Recent and/or Significant Publications

Sakai-Bizmark R, Richmond TK, Kawachi I, Elliott MN, Davies SL, Tortolero Emery S, Peskin M, Milliren CE, Schuster MA. School Social Capital and Tobacco Experimentation Among Adolescents: Evidence From a Cross-Classified Multilevel, Longitudinal Analysis. J Adolesc Health. 2020 Jan 27
Sakai-Bizmark R, Mena LA, Kumamaru H, Kawachi I, Marr EH, Webber EJ, Seo HH, Friedlander SIM, Chang RR. Impact of pediatric cardiac surgery regionalization on health care utilization and mortality. Health Serv Res. 2019 Aug;54(4):890-901.
Sakai-Bizmark R, Chang RR, Mena LA, Webber EJ, Marr EH, Kwong KY. Asthma Hospitalizations Among Homeless Children in New York State. Pediatrics. 2019 Aug;144(2).
Sakai Bizmark R, Chang RR, Tsugawa Y, Zangwill KM, Kawachi I. Impact of AHA's 2007 guideline change on incidence of infective endocarditis in infants and children. Am Heart J. 2017 Jul;189:110-119.
Sakai R, Fink G, Kumamaru H, Kawachi I. The Impact of Pediatrician Supply on Child Health Outcomes: Longitudinal Evidence from Japan. Health Serv Res. 2016 Apr;51(2):530-49.
Sakai-Bizmark R, Kumamaru H, Estevez D, Neman S, Bedel LEM, Mena LA, Marr EH, Ross MG. Reduced rate of postpartum readmissions among homeless compared with non-homeless women in New York: a population-based study using serial, cross-sectional data. BMJ Quality & Safety. 2021 June 16. [Epub ahead of print]
Sakai-Bizmark R, Kumamaru H, Estevez D, Marr EH, Haghnazarian E, Bedel LEM, Mena LA, Kaplan MS. “Healthcare Utilization Due to Suicide Attempts among Homeless Youth in New York State” Am J Epidemiol. 2021 Feb 12. [Epub ahead of print]
Sakai-Bizmark R, Mena LA, Estevez D, Webber EJ, Marr EH, PhD, Bedel LEM, Yee JK. "Healthcare Utilization of Homeless Minors with Diabetes Mellitus in New York State from 2009 to 2014" Diabetes Care. 2020; 43:2082-2089.
Sakai-Bizmark R, Ross MG, Estevez D, Bedel LEM, Marr EH, Tsugawa Y. Evaluation of Hospital Cesarean Delivery-Related Profits and Rates in the United States. JAMA Netw Open. 2021 Mar 1;4(3):e212235.