Manisha Desai, Ph.D.
Professor of Medicine and of Biomedical Data Science,
Section Chief for Biostatistics,
Director of QSU

Dr. Desai is Professor of Medicine and of Biomedical Data Science. She joined Stanford in 2009 after spending 9 years on the faculty of the Department of Biostatistics at Columbia University.

Mary Boulos, M.P.P
Executive Director, QSU

Ms. Mary Boulos is the Exectuive Director of QSU, and she joined QSU in September 2015.


Vivek Charu, MD, Ph.D.
Assistant Professor

Dr. Charu is Assistant Professor of Pathology and Medicine. He joined the QSU in 2021.  

Andrew Gentles, Ph.D.
Assistant Professor

Dr. Gentles is Assistant Professor of Medicine and Biomedical Data Science. He joined QSU in December 2015.  

Summer Han, Ph.D.
Assistant Professor

Dr. Han is Assistant Professor of Neurosurgery and Medicine. She joined QSU in November 2015. 

Zihuai He, Ph.D
Assistant Professor 

Dr. Zihuai He joined QSU in November 2018. He is Assistant Professor of Neurology and of Medicine.  

Maya Mathur, Ph.D
Assisant Professor

Maya Mathur is Assistant Professor at the Stanford University Quantitative Sciences Unit.  


Derek Boothroyd, Ph.D.
Senior Biostatistician

Dr. Boothroyd joined the QSU in October 2014. He received his PhD in Statistics from Stanford University in 2001 where his doctoral research was applied to modeling progression of kidney function in diabetic nephropathy. 

Kristen Cunanan, Ph.D.
Senior Biostatistician

Dr. Cunanan joined the QSU in July 2018. Prior to QSU, she was a Research Scholar at Memorial Sloan Kettering Cancer Center. Kristen received her PhD in Biostatistics from University of Minnesota in 2015.

Alex Dahlen, PhD
Senior Biostatistician

Alex joined the QSU in January of 2021.  He got his Ph. D. in the physics of bubbles from Princeton in 2011, and then transitioned to working in data science and statistics.  He’s interested in data modeling and causal inference, and in applying those statistical tools to the research happening here at Stanford.

Victoria Ding, M.S.

Victoria joined the QSU in June 2013.  She completed her M.S. in Biostatistics at the University of Washington, where she engaged in collaborative research pertaining to mental health and gerontology.

Ariadna Garcia, M.S.
Senior Data Scientist 

Ariadna joined the QSU in January 2016. She completed her M.S. in Management Information Systems at the University of Illinois at Chicago. 

Rebecca Gardner, M.S.

Rebecca joined the QSU in January 2019. She completed her MS in Statistics at Brigham Young University in 2016, where she collaborated with cardiologists to develop a new approach to diagnose rheumatic heart disease for her Master's thesis. 

Anna Graber-Naidich, MSc, PhD Senior Research Data Scientist

Anna is a senior research data analyst for the QSU, joining the group after working for three years at the Stanford Research Informatics Center, where she gained experience with extracting data from Clarity and the OMOP CDM, working with researchers throughout the Stanford SoM. 

Haley Hedlin, Ph.D.
Senior Biostatistician

Associate Director, Clinical Trials Program

Dr. Hedlin joined the QSU in 2013 after completing a postdoctoral position with the Five Colleges Consortium. She received her PhD in Biostatistics from Johns Hopkins in 2011.

Kristopher Kapphahn, M.S.
Senior Biostatistician

Kris joined the QSU in May 2012 after completing his M.S. in Biostatistics from the University of Minnesota. In his graduate work, he studied the handling of missing data for social networking data through multiple imputation techniques.

Justin Lee, M.P.H.

Justin joined the QSU in September 2016 after receiving his MPH degree from the University of Miami.

Yuhan Liu, M.S.

Yuhan joined the QSU in March 2021. She got her master’s degree in Biostatistics from Duke University. After that and prior to QSU, she worked as a biostatistician at the Vanderbilt University Medical Center where she worked on ophthalmology and pediatrics projects.

Di Lu, M.S.

Di joined the QSU in February 2020. She completed her Master in Biostatistics at Duke University.  

Rong Lu, Ph.D.
Senior Biostatistician

Dr. Lu joined the QSU in 2020. Prior to QSU, she was a senior biostatistical consultant at UT Southwestern Medical Center (UTSW). She received her PhD in Biostatistics from The Ohio State University (OSU) in 2016.

FeiFei Qin, M.P.H.

FeiFei joined the QSU in February 2014 after completing her M.P.H. in Epidemiology and Biostatistics from UC Berkeley.

Victor Ritter, PhD
Senior Biostatistician

Dr. Ritter joined the QSU in February 2022. He got his Ph.D. in Biostatistics from the University of North Carolina at Chapel Hill in August of 2021 and is interested in statistical methods for non and semiparametric inference for time-to-event data with a focus on competing risks, cure rate, and multistate models.

Megha Tandel, MPH

Megha joined the QSU in January 2022. She completed her MPH in Epidemiology and Biostatistics at the University of Southern California (USC). 

Yiwen Wang, PhD
Senior Biostatistician

Yiwen joined the QSU in January 2022. She has her PhD in Epidemiology from The Ohio State University. 

Isabel Weng, M.H.S.
Senior Biostatistician

Isabel joined the QSU in October 2017. She completed her M.H.S in Epidemiology from Johns Hopkins University in 2014. 

Kenny Zhang, M.S.

Kenny joined the QSU in November 2020. He graduated from Duke University with a master’s degree in Biostatistics.  His graduate work focused on statistical analysis of biomarker and validation of prognostic and predictive models.

Administrative Staff

Ni Deng, M.S.
Data Analyst

Ni joined QSU in September 2015. Prior to this, she was working at Whitehead Institute for Biomedical Research in Cambridge, MA. 

James Miller, M.B.A.
Finance & Grants Management Administrator

Jim came to Stanford in 2015, and spent four years as an award manager with the Department of Pathology before joining QSU in February 2021.  Prior to Stanford, he spent much of his career in corporate finance and corporate treasury.  Jim holds a BA and MBA from Northwestern University and The University of Chicago, respectively.