Jun 2020 - present

Lead Biostatistician (Digital Health Outcomes)

Oct 2018 - Mar 2020 (1.5 years)

Senior Statistician (Research and Data Science)

Clarify Health

  • Led causal inference (potential outcomes, directed acyclic graphs) to model CMS metrics/outcomes using healthcare claims (e.g., Medicare, case-mix) joined with socio-behavioral determinants of health commercial data (e.g., LexisNexis, LiveRamp); e.g., machine learning prediction (e.g., regularized GLM, random forests) for admission/readmission risk, total cost of care, hospital length-of-stay. Performed life sciences real-world evidence cost analytics: wrote statistical analysis plan, conducted multiple imputation. Assessed data quality (missingness, measurement error, selection bias). Taught/applied statistical methods (e.g., survey sampling, standardization, imputation). Worked in R, SQL, and Spark (Sparklyr, PySpark); RStudio, DBeaver, and AWS (Athena, EMR, S3, EC2). PM: Confluence, Jira, scrum master.

Aug 2018 - Sep 2018 (2 months)

Statistical Consultant

May 2018 - Sep 2018 (5 months)

Statistical Consultant

Sep 2007 - Sep 2018 (11 years)

Postdoctoral and Graduate Researcher, Biostatistician, and Principal Investigator

Stanford University, UNC Chapel Hill

  • (See Academic Appointments section below.)

Sep 2002 - Aug 2007 (5 years)

SAS Programmer / Biostatistician

Supergen, Inc (now Astex Pharmaceuticals)

  • Supported Phase II and III oncology clinical trials. Conducted analyses and enforced GCP standards using SAS. Managed clinical data, created/reviewed TLGs and SOPs. Stayed abreast of FDA guidelines and CDISC.

 

May 2017 - Apr 2018 (1 year)

Principal Investigator

Jul 2016 - Sep 2018 (2 years)

Study Biostatistician

Oct 2015 - Sep 2018 (3 years)

Stanford Prevention Research Center (Mentor: Michael Baiocchi, PhD)

Trained in data-analytic and machine-learning methods, and methodological research in causal inference. Collaborated within academic and non-academic projects by providing statistical consultation and programming solutions.

May 2010 - Sep 2015 (5 years)

Graduate Research Assistant + Biostatistician

UNC Chapel Hill: Carolina Population Center (CPC)

Performed data management and cleaning, and statistical programming in Stata and SAS. Assisted faculty, post-doc, graduate, and undergraduate researchers with statistical concepts, methods, and software implementation.

Jun 2009 - Jun 2010 (1 year)

Research Assistant

UNC Chapel Hill: Survey Research Unit (Advisor: William Kalsbeek, PhD)

Collaborated with SRU Director and researchers in applying survey sampling methods for Add Health and the NC Department of Transportation. Provided statistical programming support in SAS and SUDAAN.

Sep 2007 - Jul 2009 (2 years)

Graduate Research Assistant

Rho, Inc.

Drafted table, listing, and graph (TLG) specifications, and produced TLGs. Prepared statistical reports. Conducted analyses. Validated dataset structures, analyses, TLGs, and reports. Maintained analysis and validation documentation.

 

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